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Ridge","#368724","#40a629",[162,167,173,179,185,191,196,202,208],{"stage":26,"step":5,"id":163,"node":164,"title":165,"subtitle":166,"topic":23,"track":24},"shuffle-isnt-random",19,"L'aléatoire pas si aléatoire","Spotify a rendu sa lecture aléatoire moins aléatoire, car le vrai hasard semblait truqué",{"stage":26,"step":19,"id":168,"node":169,"title":170,"subtitle":171,"topic":172,"track":100},"deleted-isnt-gone",20,"Supprimé, pas disparu","Supprimer un fichier efface en général juste son adresse, pas son contenu","Stockage de données",{"stage":26,"step":26,"id":174,"node":175,"title":176,"subtitle":177,"topic":178,"track":72},"the-rope-around-the-earth",21,"La corde autour de la Terre","Ajoute un mètre à une corde autour de la planète : elle se soulève de 16 cm partout","Géométrie",{"stage":26,"step":33,"id":180,"node":181,"title":182,"subtitle":183,"topic":184,"track":65},"the-invisible-gorilla",22,"Le gorille invisible","La moitié des gens ratent un gorille qui traverse un match de 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exponentielle",{"stage":26,"step":67,"id":209,"node":210,"title":211,"subtitle":212,"topic":213,"track":214},"how-planes-really-fly",27,"Comment les avions volent vraiment","La célèbre explication du « chemin plus long par-dessus » est fausse","Aéronautique","Énergie, chaleur & mouvement",[216,217,218,219,220,221],{"track":72,"count":26},{"track":100,"count":19},{"track":24,"count":5},{"track":65,"count":5},{"track":114,"count":5},{"track":214,"count":5},{"zone":33,"theme":223,"lessons":228,"topics":283},{"key":224,"name":225,"light":226,"dark":227},"cipher-vault","Cipher Vault","#b82a50","#d73e66",[229,235,241,248,254,259,265,272,278],{"stage":33,"step":5,"id":230,"node":231,"title":232,"subtitle":233,"topic":234,"track":58},"the-cookie-jar",28,"La boîte à cookies","Une petite note permet à un site de se souvenir de ton passage","Technologies du Web",{"stage":33,"step":19,"id":236,"node":237,"title":238,"subtitle":239,"topic":240,"track":107},"two-factor-login",29,"La double 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indéchiffrable",{"stage":33,"step":46,"id":260,"node":261,"title":262,"subtitle":263,"topic":264,"track":247},"the-secret-handshake",33,"La poignée de main secrète","Deux inconnus peuvent convenir d'un secret pendant que tout le monde écoute","Cryptographie",{"stage":33,"step":53,"id":266,"node":267,"title":268,"subtitle":269,"topic":270,"track":271},"the-quantum-tunnel",34,"Le tunnel quantique","Des particules traversent des murs qu'elles ne peuvent pas franchir, et la mémoire de ton téléphone en dépend","Physique quantique","Quantique & relativité",{"stage":33,"step":60,"id":273,"node":274,"title":275,"subtitle":276,"topic":277,"track":214},"why-your-battery-wears-out",35,"Pourquoi ta batterie s'use","Chaleur, charge pleine et batterie à plat : voilà ce qui use le plus vite ton téléphone","Stockage d'énergie",{"stage":33,"step":67,"id":279,"node":280,"title":281,"subtitle":282,"topic":172,"track":100},"why-your-1-tb-drive-shows-931-gb",36,"Pourquoi ton disque de 1 TB affiche 931 GB","Les fabricants de disques et les ordinateurs ne comptent pas les octets de la même façon",[284,285,286,287,288,289],{"track":247,"count":33},{"track":58,"count":5},{"track":107,"count":5},{"track":271,"count":5},{"track":214,"count":5},{"track":100,"count":5},{"zone":40,"theme":291,"lessons":296,"topics":352},{"key":292,"name":293,"light":294,"dark":295},"quantum-foam","Quantum Foam","#7453ec","#8e72f0",[297,304,310,316,323,328,334,340,346],{"stage":40,"step":5,"id":298,"node":299,"title":300,"subtitle":301,"topic":302,"track":303},"the-packet-puzzle",37,"Le puzzle des paquets","Ton message est découpé, puis reconstruit à l'arrivée","Communication de données","Comment voyagent les données",{"stage":40,"step":19,"id":305,"node":306,"title":307,"subtitle":308,"topic":309,"track":114},"rolling-shutter",38,"L'obturateur roulant","Pourquoi ton téléphone change les hélices en bananes","Imagerie numérique",{"stage":40,"step":26,"id":311,"node":312,"title":313,"subtitle":314,"topic":315,"track":17},"guess-my-number-in-7-tries",39,"Devine mon nombre en 7 essais","La recherche dichotomique coupe les possibilités en deux pour trouver ton nombre vite","Algorithmes",{"stage":40,"step":33,"id":317,"node":318,"title":319,"subtitle":320,"topic":321,"track":322},"why-concrete-needs-steel",40,"Pourquoi le béton a besoin d'acier","Le béton résiste quand on le comprime, mal quand on l'étire","Génie civil","Ingénierie & machines",{"stage":40,"step":40,"id":324,"node":325,"title":326,"subtitle":327,"topic":23,"track":24},"spot-the-fake-coin-flips",41,"Démasque les faux lancers de pièce","Ceux qui inventent des lancers n'écrivent presque jamais de longues séries",{"stage":40,"step":46,"id":329,"node":330,"title":331,"subtitle":332,"topic":333,"track":31},"your-cards-last-digit-is-a-lie-detector",42,"Le dernier chiffre de ta carte est un détecteur de mensonges","Le dernier chiffre d'un numéro de carte vérifie tous les autres","Détection d'erreurs",{"stage":40,"step":53,"id":335,"node":336,"title":337,"subtitle":338,"topic":339,"track":145},"the-1890-census-ran-on-punch-cards",43,"Le recensement de 1890 tournait sur cartes perforées","Des trous dans du carton ont compté une nation, et IBM en est issu","Histoire de l'informatique",{"stage":40,"step":60,"id":341,"node":342,"title":343,"subtitle":344,"topic":345,"track":271},"the-double-slit-surprise",44,"La surprise de la double fente","Des particules isolées dessinent un motif que seules des ondes devraient faire","Mécanique quantique",{"stage":40,"step":67,"id":347,"node":348,"title":349,"subtitle":350,"topic":351,"track":51},"judge-by-your-neighbours",45,"Le plus proche voisin","Un nouvel objet peut être classé d'après les exemples qui lui ressemblent le plus","Apprentissage automatique",[353,354,355,356,357,358,359,360,361],{"track":303,"count":5},{"track":114,"count":5},{"track":17,"count":5},{"track":322,"count":5},{"track":24,"count":5},{"track":31,"count":5},{"track":145,"count":5},{"track":271,"count":5},{"track":51,"count":5},{"zone":46,"theme":363,"lessons":368,"topics":422},{"key":364,"name":365,"light":366,"dark":367},"silicon-dunes","Silicon Dunes","#aa671c","#d27e23",[369,375,381,386,392,398,404,410,416],{"stage":46,"step":5,"id":370,"node":371,"title":372,"subtitle":373,"topic":374,"track":65},"phantom-vibrations",46,"Vibrations fantômes","La plupart des utilisateurs de téléphone ont déjà senti une vibration qui n'a jamais existé","Psychologie numérique",{"stage":46,"step":19,"id":376,"node":377,"title":378,"subtitle":379,"topic":380,"track":38},"why-we-only-see-one-side-of-the-moon",47,"Pourquoi on ne voit qu'une face de la Lune","La Lune tourne sur elle-même exactement une fois par orbite","Astronomie",{"stage":46,"step":26,"id":382,"node":383,"title":384,"subtitle":385,"topic":126,"track":72},"the-pigeonhole-trick",48,"L'astuce des tiroirs","Trop de pigeons pour les trous, et un doublon caché est garanti",{"stage":46,"step":33,"id":387,"node":388,"title":389,"subtitle":390,"topic":391,"track":58},"incognito-isnt-invisible",49,"Incognito ne veut pas dire invisible","Le mode privé cache ton historique à ton téléphone, pas à Internet","Vie privée en ligne",{"stage":46,"step":40,"id":393,"node":394,"title":395,"subtitle":396,"topic":397,"track":107},"the-qr-sticker-scam",50,"L'arnaque à l'autocollant QR","Un faux code collé sur le parcmètre envoie ta carte à un voleur","Sécurité en ligne",{"stage":46,"step":46,"id":399,"node":400,"title":401,"subtitle":402,"topic":403,"track":247},"change-one-letter-change-everything",51,"Change une lettre, tout change","Un hachage est une empreinte qui bascule entièrement au moindre changement","Hachage cryptographique",{"stage":46,"step":53,"id":405,"node":406,"title":407,"subtitle":408,"topic":409,"track":100},"everything-is-binary",52,"Tout est binaire","Chansons, photos et cette phrase ne sont que de l'allumé et de l'éteint","Binaire",{"stage":46,"step":60,"id":411,"node":412,"title":413,"subtitle":414,"topic":415,"track":271},"atoms-are-mostly-empty",53,"Les atomes sont presque vides","Si un atome était un stade, le noyau serait une bille","Physique atomique",{"stage":46,"step":67,"id":417,"node":418,"title":419,"subtitle":420,"topic":421,"track":214},"your-fridge-doesnt-make-cold",54,"Ton frigo ne fabrique pas de froid","Il pompe la chaleur hors de la boîte et la rejette dans ta cuisine","Génie thermique",[423,424,425,426,427,428,429,430,431],{"track":65,"count":5},{"track":38,"count":5},{"track":72,"count":5},{"track":58,"count":5},{"track":107,"count":5},{"track":247,"count":5},{"track":100,"count":5},{"track":271,"count":5},{"track":214,"count":5},{"zone":53,"theme":433,"lessons":438,"topics":490},{"key":434,"name":435,"light":436,"dark":437},"fiber-reef","Fiber Reef","#0b8483","#0ea3a1",[439,445,450,455,461,467,473,478,484],{"stage":53,"step":5,"id":440,"node":441,"title":442,"subtitle":443,"topic":444,"track":100},"the-peanut-butter-robot",55,"Le robot au beurre de cacahuète","Programmer, c'est donner des instructions à quelqu'un qui n'a aucun bon sens","Concepts de programmation",{"stage":53,"step":19,"id":446,"node":447,"title":448,"subtitle":449,"topic":309,"track":114},"why-your-selfie-is-flipped",56,"Pourquoi ton selfie est inversé","Ta caméra frontale montre un miroir, puis enregistre la vérité",{"stage":53,"step":26,"id":451,"node":452,"title":453,"subtitle":454,"topic":315,"track":17},"sorting-race",57,"Course de tri","La bonne méthode bat un ordinateur plus rapide",{"stage":53,"step":33,"id":456,"node":457,"title":458,"subtitle":459,"topic":460,"track":303},"light-that-bends-around-corners",58,"La lumière qui prend les virages","On peut piéger la lumière dans un fil de verre","Fibre optique",{"stage":53,"step":40,"id":462,"node":463,"title":464,"subtitle":465,"topic":466,"track":303},"the-undersea-internet",59,"L'internet sous-marin","Presque toutes les données entre continents voyagent par des câbles au fond de l'océan","Infrastructure d'Internet",{"stage":53,"step":46,"id":468,"node":469,"title":470,"subtitle":471,"topic":472,"track":322},"crumple-zones",60,"Les zones de déformation","Les voitures protègent leurs passagers en s'écrasant lentement","Sécurité automobile",{"stage":53,"step":53,"id":474,"node":475,"title":476,"subtitle":477,"topic":23,"track":24},"the-gamblers-fallacy",61,"L'erreur du joueur","Après cinq faces, la pièce n'a toujours pas de mémoire",{"stage":53,"step":60,"id":479,"node":480,"title":481,"subtitle":482,"topic":483,"track":31},"barcodes",62,"Les codes-barres","Les rayures noires et blanches ne sont que des nombres déguisés","Codage des données",{"stage":53,"step":67,"id":485,"node":486,"title":487,"subtitle":488,"topic":489,"track":145},"the-first-website-is-still-online",63,"Le premier site web est toujours en ligne","Tu peux encore visiter la page que Tim Berners-Lee a publiée en 1991","Histoire du Web",[491,492,493,494,495,496,497,498],{"track":303,"count":19},{"track":100,"count":5},{"track":114,"count":5},{"track":17,"count":5},{"track":322,"count":5},{"track":24,"count":5},{"track":31,"count":5},{"track":145,"count":5},{"zone":60,"theme":500,"lessons":505,"topics":558},{"key":501,"name":502,"light":503,"dark":504},"pixel-drift","Pixel Drift","#e6127f","#f253a4",[506,512,518,524,530,535,541,546,552],{"stage":60,"step":5,"id":507,"node":508,"title":509,"subtitle":510,"topic":511,"track":303},"finding-a-route",64,"Trouver son chemin","Les paquets traversent la planète sans que personne ne connaisse toute la carte","Réseaux informatiques",{"stage":60,"step":19,"id":513,"node":514,"title":515,"subtitle":516,"topic":517,"track":51},"youve-been-training-ai-for-free",65,"Tu entraînes l'IA gratuitement","Ces feux et passages piétons des CAPTCHA ont appris aux machines à voir","Annotation de données",{"stage":60,"step":26,"id":519,"node":520,"title":521,"subtitle":522,"topic":523,"track":65},"faces-everywhere",66,"Des visages partout","Ton cerveau est si réglé sur les visages qu'il en trouve dans les prises et les toasts","Perception des formes",{"stage":60,"step":33,"id":525,"node":526,"title":527,"subtitle":528,"topic":529,"track":38},"sixteen-sunrises-a-day",67,"Seize levers de soleil par jour","La station spatiale fait le tour de la Terre toutes les 90 minutes","Vol spatial",{"stage":60,"step":40,"id":531,"node":532,"title":533,"subtitle":534,"topic":126,"track":72},"the-party-puzzle",68,"L'énigme de la fête","Dans toute fête à six, trois sont tous amis ou tous inconnus",{"stage":60,"step":46,"id":536,"node":537,"title":538,"subtitle":539,"topic":540,"track":58},"half-the-internet-is-robots",69,"La moitié d'Internet, ce sont des robots","Près de la moitié du trafic web n'est pas humain","Trafic Internet",{"stage":60,"step":53,"id":542,"node":543,"title":544,"subtitle":545,"topic":120,"track":107},"would-you-plug-it-in",70,"Tu la brancherais ?","Près de la moitié des clés USB abandonnées ont été branchées",{"stage":60,"step":60,"id":547,"node":548,"title":549,"subtitle":550,"topic":551,"track":214},"the-sonic-boom",71,"Le bang supersonique","Dépasse ton propre son et il s'entasse en onde de choc","Acoustique",{"stage":60,"step":67,"id":553,"node":554,"title":555,"subtitle":556,"topic":557,"track":114},"the-missing-yellow",72,"Le jaune manquant","Ton écran affiche du jaune sans une seule lumière jaune","Science des 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maths",{"stage":67,"step":53,"id":611,"node":612,"title":613,"subtitle":614,"topic":23,"track":24},"the-sticker-album-problem",79,"Le problème de l'album de vignettes","Trouver les dernières vignettes prend plus de temps que tout le reste réuni",{"stage":67,"step":60,"id":616,"node":617,"title":618,"subtitle":619,"topic":620,"track":31},"the-phantom-singer",80,"La chanteuse fantôme","Deux enceintes peuvent placer une voix là où il n'y a aucune enceinte","Ingénierie audio",{"stage":67,"step":67,"id":622,"node":623,"title":624,"subtitle":625,"topic":626,"track":145},"the-internets-first-word-was-lo",81,"Le premier mot d'Internet fut « LO »","Le premier message a planté après deux lettres","Histoire 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passe",{"stage":91,"step":53,"id":680,"node":681,"title":682,"subtitle":683,"topic":684,"track":214},"measure-light-speed-with-chocolate",88,"Mesure la vitesse de la lumière avec du chocolat","Ton micro-ondes peut mesurer la vitesse de la lumière","Électromagnétisme",{"stage":91,"step":60,"id":686,"node":687,"title":688,"subtitle":689,"topic":690,"track":322},"the-arch",89,"L'arche","Des pierres libres tiennent 2 000 ans en se poussant les unes les autres","Conception des structures",{"stage":91,"step":67,"id":692,"node":693,"title":694,"subtitle":695,"topic":696,"track":100},"your-computer-doesnt-multitask",90,"Ton ordinateur ne fait pas plusieurs choses à la fois","Il change de tâche si vite qu'il te 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labyrinthes",{"stage":96,"step":26,"id":726,"node":727,"title":728,"subtitle":729,"topic":178,"track":322},"why-three-legs-never-wobble",93,"Pourquoi trois pieds ne sont jamais bancals","Trois points épousent toujours une surface ; quatre, souvent pas",{"stage":96,"step":33,"id":731,"node":732,"title":733,"subtitle":734,"topic":735,"track":24},"when-the-average-lies",94,"Quand la moyenne ment","Un milliardaire entre dans un bar et, en moyenne, tout le monde devient riche","Statistiques",{"stage":96,"step":40,"id":737,"node":738,"title":739,"subtitle":740,"topic":741,"track":31},"the-doppler-effect",95,"L'effet Doppler","Le mouvement change la hauteur du son et la couleur de la lumière","Physique des ondes",{"stage":96,"step":46,"id":743,"node":744,"title":745,"subtitle":746,"topic":747,"track":65},"the-stroop-effect",96,"L'effet Stroop","Dire la couleur d'un mot est difficile quand ce mot nomme une autre couleur","Psychologie cognitive",{"stage":96,"step":53,"id":749,"node":750,"title":751,"subtitle":752,"topic":735,"track":24},"benfords-law",97,"La loi de Benford","Dans les données réelles, les nombres commencent par 1 six fois plus souvent que par 9",{"stage":96,"step":60,"id":754,"node":755,"title":756,"subtitle":757,"topic":758,"track":38},"a-day-on-venus-is-longer-than-its-year",98,"Sur Vénus, un jour dure plus qu'une année","Vénus tourne si lentement que l'année finit avant","Planétologie",{"stage":96,"step":67,"id":760,"node":761,"title":762,"subtitle":763,"topic":764,"track":72},"the-mysterious-6174",99,"Le mystérieux 6174","Tout nombre de quatre chiffres tombe sur le même nombre","Mathématiques 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inclinaison","Capteurs",{"stage":103,"step":53,"id":817,"node":818,"title":819,"subtitle":820,"topic":23,"track":24},"penneys-game",106,"Le jeu de Penney","Laisse-moi choisir en second et je gagnerai la plupart des courses à pile ou face",{"stage":103,"step":60,"id":822,"node":823,"title":824,"subtitle":825,"topic":551,"track":31},"why-you-hate-your-recorded-voice",107,"Pourquoi tu détestes ta voix enregistrée","D'habitude, tu t'entends à travers ton propre crâne",{"stage":103,"step":67,"id":827,"node":828,"title":829,"subtitle":830,"topic":831,"track":65},"why-you-cant-tickle-yourself",108,"Pourquoi tu ne peux pas te chatouiller","Ton cerveau prédit ton propre contact et l'annule","Neurosciences",[833,834,835,836,837,838,839,840],{"track":31,"count":19},{"track":58,"count":5},{"track":214,"count":5},{"track":100,"count":5},{"track":114,"count":5},{"track":322,"count":5},{"track":24,"count":5},{"track":65,"count":5},{"zone":110,"theme":842,"lessons":847,"topics":898},{"key":843,"name":844,"light":845,"dark":846},"retro-terminal","Retro Terminal","#707b0f","#899713",[848,853,859,865,871,877,882,887,893],{"stage":110,"step":5,"id":849,"node":850,"title":851,"subtitle":852,"topic":758,"track":38},"saturn-would-float",109,"Saturne flotterait","La planète géante est moins dense que l'eau",{"stage":110,"step":19,"id":854,"node":855,"title":856,"subtitle":857,"topic":858,"track":72},"random-dots-draw-a-triangle",110,"Des points au hasard dessinent un triangle","Un jeu de hasard dessine une fractale parfaite","Fractales",{"stage":110,"step":26,"id":860,"node":861,"title":862,"subtitle":863,"topic":864,"track":58},"emoji-are-secret-sums",111,"Les emojis sont des sommes secrètes","Un emoji famille, ce sont plusieurs emojis collés","Encodage du texte",{"stage":110,"step":33,"id":866,"node":867,"title":868,"subtitle":869,"topic":870,"track":214},"count-the-thunder",112,"Compte le tonnerre","L'éclair te dit à quelle distance est l'orage","Ondes",{"stage":110,"step":40,"id":872,"node":873,"title":874,"subtitle":875,"topic":876,"track":322},"why-manholes-are-round",113,"Pourquoi les plaques d'égout sont rondes","Une plaque ronde ne peut jamais tomber dans son propre trou","Conception technique",{"stage":110,"step":46,"id":878,"node":879,"title":880,"subtitle":881,"topic":178,"track":322},"the-drill-that-makes-square-holes",114,"La perceuse qui fait des trous carrés","Un triangle arrondi peut percer un trou presque carré",{"stage":110,"step":53,"id":883,"node":884,"title":885,"subtitle":886,"topic":23,"track":24},"why-casinos-always-win",115,"Pourquoi le casino gagne toujours","Avec assez de mises, un petit avantage devient une 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mobile",{"stage":117,"step":40,"id":936,"node":937,"title":938,"subtitle":939,"topic":940,"track":58},"why-tweets-were-140",122,"Pourquoi les tweets faisaient 140","Twitter gardait 20 caractères de chaque SMS pour ton nom","Réseaux sociaux",{"stage":117,"step":46,"id":942,"node":943,"title":944,"subtitle":945,"topic":946,"track":51},"the-word-guessing-machine",123,"La machine à deviner les mots","Les chatbots écrivent en prédisant le mot suivant, encore et encore","Modèles de langage",{"stage":117,"step":53,"id":948,"node":949,"title":950,"subtitle":951,"topic":952,"track":214},"why-the-sky-is-blue",124,"Pourquoi le ciel est bleu","L'air diffuse la lumière bleue bien plus que la rouge, et les couchers de soleil sont les restes","Optique",{"stage":117,"step":60,"id":954,"node":955,"title":956,"subtitle":957,"topic":958,"track":322},"gears",125,"Les engrenages","Échanger de la vitesse contre de la force : c'est ainsi que les vélos grimpent les côtes","Mécanique",{"stage":117,"step":67,"id":960,"node":961,"title":962,"subtitle":963,"topic":735,"track":24},"the-bell-curve-machine",126,"La machine à courbe en cloche","Les billes qui rebondissent s'entassent toujours selon la même forme",[965,966,967,968,969,970,971,972],{"track":58,"count":19},{"track":65,"count":5},{"track":38,"count":5},{"track":72,"count":5},{"track":51,"count":5},{"track":214,"count":5},{"track":322,"count":5},{"track":24,"count":5},{"zone":123,"theme":974,"lessons":979,"topics":1032},{"key":975,"name":976,"light":977,"dark":978},"satellite-belt","Satellite Belt","#957d13","#ac9216",[980,986,992,997,1003,1008,1014,1020,1026],{"stage":123,"step":5,"id":981,"node":982,"title":983,"subtitle":984,"topic":985,"track":65},"yanny-or-laurel",127,"Yanny ou Laurel ?","Un enregistrement, deux mots, et chacun n'entend pas le même","Perception auditive",{"stage":123,"step":19,"id":987,"node":988,"title":989,"subtitle":990,"topic":991,"track":72},"the-simplest-unsolved-problem",128,"Le problème non résolu le plus simple","Pair, on divise par deux ; impair, on triple et on ajoute un. Arrive-t-on toujours à 1 ?","Problèmes non résolus",{"stage":123,"step":26,"id":993,"node":994,"title":995,"subtitle":996,"topic":626,"track":58},"the-first-youtube-video",129,"La première vidéo YouTube","Tout a commencé par dix-neuf secondes dans un zoo",{"stage":123,"step":33,"id":998,"node":999,"title":1000,"subtitle":1001,"topic":1002,"track":322},"the-train-that-copied-a-bird",130,"Le train qui a copié un oiseau","Le train à grande vitesse japonais a emprunté son nez au martin-pêcheur","Biomimétisme",{"stage":123,"step":40,"id":1004,"node":1005,"title":1006,"subtitle":1007,"topic":735,"track":24},"what-70-chance-of-rain-means",131,"Ce que veut dire « 70 % de risque de pluie »","Ce n'est ni 70 % de la journée ni 70 % de la ville",{"stage":123,"step":46,"id":1009,"node":1010,"title":1011,"subtitle":1012,"topic":1013,"track":65},"your-brain-hides-your-nose",132,"Ton cerveau cache ton nez","Ton nez est toujours dans ton champ de vision, et tu ne le vois jamais","Perception",{"stage":123,"step":53,"id":1015,"node":1016,"title":1017,"subtitle":1018,"topic":1019,"track":38},"the-atomic-clock",133,"L'horloge atomique","Les horloges les plus précises comptent les vibrations au cœur des atomes","Mesure de précision",{"stage":123,"step":60,"id":1021,"node":1022,"title":1023,"subtitle":1024,"topic":1025,"track":38},"how-gps-finds-you",134,"Comment le GPS te trouve","Ton téléphone écoute les horloges des satellites et fait le calcul","Navigation par satellite",{"stage":123,"step":67,"id":1027,"node":1028,"title":1029,"subtitle":1030,"topic":1031,"track":72},"sunflowers-count-in-fibonacci",135,"Les tournesols comptent en Fibonacci","Les spirales de graines vont par 34, 55 et 89","Les mathématiques dans la nature",[1033,1034,1035,1036,1037,1038],{"track":65,"count":19},{"track":72,"count":19},{"track":38,"count":19},{"track":58,"count":5},{"track":322,"count":5},{"track":24,"count":5},{"zone":129,"theme":1040,"lessons":1045,"topics":1097},{"key":1041,"name":1042,"light":1043,"dark":1044},"launch-pad","Launch Pad","#bf342c","#d84a43",[1046,1052,1058,1064,1069,1074,1079,1085,1091],{"stage":129,"step":5,"id":1047,"node":1048,"title":1049,"subtitle":1050,"topic":1051,"track":38},"you-cant-see-the-great-wall-from-space",136,"On ne voit pas la Grande Muraille depuis l'espace","La célèbre affirmation est un mythe","Idées reçues",{"stage":129,"step":19,"id":1053,"node":1054,"title":1055,"subtitle":1056,"topic":1057,"track":24},"the-chart-that-lies",137,"Le graphique qui ment","Coupe le bas d'un axe et un changement minuscule paraît énorme","Visualisation de données",{"stage":129,"step":26,"id":1059,"node":1060,"title":1061,"subtitle":1062,"topic":1063,"track":38},"measuring-the-earth-with-a-stick",138,"Mesurer la Terre avec un bâton","Il y a plus de 2 000 ans, un savant a mesuré la planète avec des ombres","Histoire des sciences",{"stage":129,"step":33,"id":1065,"node":1066,"title":1067,"subtitle":1068,"topic":1013,"track":65},"the-three-bowls",139,"Les trois bols","Une main dit chaud, l'autre dit froid, dans la même eau",{"stage":129,"step":40,"id":1070,"node":1071,"title":1072,"subtitle":1073,"topic":178,"track":72},"why-bees-build-hexagons",140,"Pourquoi les abeilles bâtissent des hexagones","Les hexagones stockent le plus de miel avec le moins de cire",{"stage":129,"step":46,"id":1075,"node":1076,"title":1077,"subtitle":1078,"topic":234,"track":58},"why-404",141,"Pourquoi 404 ?","Le fameux numéro de « Not Found » n'est pas une salle du CERN",{"stage":129,"step":53,"id":1080,"node":1081,"title":1082,"subtitle":1083,"topic":1084,"track":72},"the-m-bius-strip",142,"Le ruban de Möbius","Un anneau de papier qui n'a qu'une face et qu'un bord","Topologie",{"stage":129,"step":60,"id":1086,"node":1087,"title":1088,"subtitle":1089,"topic":1090,"track":107},"the-password-manager",143,"Le gestionnaire de mots de passe","Un coffre solide permet à chaque compte d'avoir son propre secret","Sécurité personnelle",{"stage":129,"step":67,"id":1092,"node":1093,"title":1094,"subtitle":1095,"topic":1096,"track":247},"the-only-perfect-cipher",144,"Le seul chiffre parfait","Un masque jetable est incassable si tu ne le réutilises jamais, jamais","Chiffrement",[1098,1099,1100,1101,1102,1103,1104],{"track":38,"count":19},{"track":72,"count":19},{"track":24,"count":5},{"track":65,"count":5},{"track":58,"count":5},{"track":107,"count":5},{"track":247,"count":5},{"zone":135,"theme":1106,"lessons":1111,"topics":1161},{"key":1107,"name":1108,"light":1109,"dark":1110},"cloud-citadel","Cloud Citadel","#0e7fa8","#129dd0",[1112,1117,1122,1127,1133,1139,1144,1150,1156],{"stage":135,"step":5,"id":1113,"node":1114,"title":1115,"subtitle":1116,"topic":207,"track":72},"rice-on-a-chessboard",145,"Du riz sur un échiquier","Double un grain à chaque case et tu ruines un royaume",{"stage":135,"step":19,"id":1118,"node":1119,"title":1120,"subtitle":1121,"topic":345,"track":271},"schr-dingers-cat-was-a-joke",146,"Le chat de Schrödinger était une blague","Le célèbre chat devait montrer à quel point l'idée semblait absurde",{"stage":135,"step":26,"id":1123,"node":1124,"title":1125,"subtitle":1126,"topic":207,"track":72},"the-lily-pad-riddle",147,"L'énigme des nénuphars","Si des nénuphars doublent chaque jour et couvrent l'étang au jour 30, quand était-il à moitié plein ?",{"stage":135,"step":33,"id":1128,"node":1129,"title":1130,"subtitle":1131,"topic":1132,"track":214},"the-cooktop-that-stays-cold",148,"La plaque qui reste froide","L'induction chauffe directement la poêle avec un champ magnétique variable","Génie électrique",{"stage":135,"step":40,"id":1134,"node":1135,"title":1136,"subtitle":1137,"topic":1138,"track":58},"how-google-ranked-the-web",149,"Comment Google a classé le Web","Une page compte quand des pages qui comptent pointent vers elle","Moteurs de recherche",{"stage":135,"step":46,"id":1140,"node":1141,"title":1142,"subtitle":1143,"topic":864,"track":100},"a-is-65",150,"A, c'est 65","Chaque lettre que tu tapes est en secret un nombre",{"stage":135,"step":53,"id":1145,"node":1146,"title":1147,"subtitle":1148,"topic":1149,"track":303},"the-internets-traffic-jam",151,"L'embouteillage d'Internet","Les réseaux ralentissent exprès pour éviter l'effondrement","Contrôle de congestion",{"stage":135,"step":60,"id":1151,"node":1152,"title":1153,"subtitle":1154,"topic":1155,"track":114},"why-mario-has-a-moustache",152,"Pourquoi Mario a une moustache","Dans un sprite de 16×16, une moustache était plus facile à dessiner qu'une bouche","Conception de jeux vidéo",{"stage":135,"step":67,"id":1157,"node":1158,"title":1159,"subtitle":1160,"topic":315,"track":17},"twice-the-data-four-times-the-wait",153,"Deux fois plus de données, quatre fois plus d'attente","Ce qui compte, c'est la vitesse à laquelle une méthode ralentit",[1162,1163,1164,1165,1166,1167,1168,1169],{"track":72,"count":19},{"track":271,"count":5},{"track":214,"count":5},{"track":58,"count":5},{"track":100,"count":5},{"track":303,"count":5},{"track":114,"count":5},{"track":17,"count":5},{"zone":141,"theme":83,"lessons":1171,"topics":1221},[1172,1178,1184,1189,1194,1200,1205,1210,1215],{"stage":141,"step":5,"id":1173,"node":1174,"title":1175,"subtitle":1176,"topic":1177,"track":72},"achilles-and-the-tortoise",154,"Achille et la tortue","Une infinité d'étapes peut tenir dans un temps fini","Séries infinies",{"stage":141,"step":19,"id":1179,"node":1180,"title":1181,"subtitle":1182,"topic":1183,"track":322},"suspension-bridges",155,"Les ponts suspendus","Les câbles changent d'énormes charges en une tension qu'ils supportent","Génie des ponts",{"stage":141,"step":26,"id":1185,"node":1186,"title":1187,"subtitle":1188,"topic":764,"track":72},"the-1089-trick",156,"Le tour du 1089","N'importe quel nombre à trois chiffres mène à la même réponse",{"stage":141,"step":33,"id":1190,"node":1191,"title":1192,"subtitle":1193,"topic":23,"track":24},"the-100-prisoners-riddle",157,"L'énigme des 100 prisonniers","Un plan astucieux change une mort quasi certaine en 31 % de chances",{"stage":141,"step":40,"id":1195,"node":1196,"title":1197,"subtitle":1198,"topic":1199,"track":31},"why-adverts-sound-louder",158,"Pourquoi les pubs sonnent plus fort","Deux sons au même volume peuvent sembler complètement différents","Psychoacoustique",{"stage":141,"step":46,"id":1201,"node":1202,"title":1203,"subtitle":1204,"topic":339,"track":145},"the-women-who-programmed-eniac",159,"Les femmes qui ont programmé l'ENIAC","Six femmes ont programmé le premier ordinateur électronique polyvalent",{"stage":141,"step":53,"id":1206,"node":1207,"title":1208,"subtitle":1209,"topic":946,"track":51},"same-question-different-answer",160,"Même question, réponse différente","Un réglage appelé température rend les chatbots créatifs ou prévisibles",{"stage":141,"step":60,"id":1211,"node":1212,"title":1213,"subtitle":1214,"topic":264,"track":107},"how-long-to-crack-it",161,"Combien de temps pour le craquer ?","Chaque caractère de plus multiplie le travail d'un attaquant",{"stage":141,"step":67,"id":1216,"node":1217,"title":1218,"subtitle":1219,"topic":1220,"track":107},"how-sites-store-your-password",162,"Comment les sites gardent ton mot de passe","Un bon site ne connaît jamais vraiment ton mot de passe","Cybersécurité",[1222,1223,1224,1225,1226,1227,1228],{"track":72,"count":19},{"track":107,"count":19},{"track":322,"count":5},{"track":24,"count":5},{"track":31,"count":5},{"track":145,"count":5},{"track":51,"count":5},{"zone":164,"theme":156,"lessons":1230,"topics":1282},[1231,1237,1242,1247,1253,1259,1264,1270,1276],{"stage":164,"step":5,"id":1232,"node":1233,"title":1234,"subtitle":1235,"topic":1236,"track":72},"the-missing-dollar",163,"Le dollar manquant","Une célèbre énigme d'argent marche en additionnant ce qu'il ne faut pas","Arithmétique",{"stage":164,"step":19,"id":1238,"node":1239,"title":1240,"subtitle":1241,"topic":985,"track":65},"the-cocktail-party-effect",164,"L'effet cocktail party","Ton cerveau peut suivre une seule voix dans une salle bondée",{"stage":164,"step":26,"id":1243,"node":1244,"title":1245,"subtitle":1246,"topic":178,"track":72},"pythagoras-without-algebra",165,"Pythagore sans algèbre","Glisse quatre triangles et le théorème se démontre tout seul",{"stage":164,"step":33,"id":1248,"node":1249,"title":1250,"subtitle":1251,"topic":1252,"track":38},"escape-speed",166,"La vitesse de libération","Quitter la Terre pour de bon demande environ 11 kilomètres par seconde","Astrodynamique",{"stage":164,"step":40,"id":1254,"node":1255,"title":1256,"subtitle":1257,"topic":1258,"track":58},"error-418-im-a-teapot",167,"Erreur 418 : je suis une théière","Un poisson d'avril devenu partie des vrais standards d'Internet","Culture Internet",{"stage":164,"step":46,"id":1260,"node":1261,"title":1262,"subtitle":1263,"topic":1132,"track":214},"the-war-of-the-currents",168,"La guerre des courants","Edison et Tesla se sont battus pour la façon dont l'électricité arriverait chez toi",{"stage":164,"step":53,"id":1265,"node":1266,"title":1267,"subtitle":1268,"topic":1269,"track":107},"credential-stuffing",169,"Le bourrage d'identifiants","Un mot de passe fuité peut ouvrir plein de comptes sans rapport","Hygiène des mots de passe",{"stage":164,"step":60,"id":1271,"node":1272,"title":1273,"subtitle":1274,"topic":1275,"track":247},"the-prime-lock",170,"Le cadenas des nombres premiers","Multiplier est facile ; défaire la multiplication est le secret de la sécurité en ligne","Théorie des nombres",{"stage":164,"step":67,"id":1277,"node":1278,"title":1279,"subtitle":1280,"topic":1281,"track":271},"ghost-particles",171,"Particules fantômes","Des billions de neutrinos te traversent chaque seconde","Physique des particules",[1283,1284,1285,1286,1287,1288,1289,1290],{"track":72,"count":19},{"track":65,"count":5},{"track":38,"count":5},{"track":58,"count":5},{"track":214,"count":5},{"track":107,"count":5},{"track":247,"count":5},{"track":271,"count":5},{"zone":169,"theme":223,"lessons":1292,"topics":1344},[1293,1299,1305,1311,1317,1323,1329,1334,1339],{"stage":169,"step":5,"id":1294,"node":1295,"title":1296,"subtitle":1297,"topic":1298,"track":72},"the-friendship-paradox",172,"Le paradoxe de l'amitié","Tes amis ont sans doute plus d'amis que toi","Mathématiques des réseaux",{"stage":169,"step":19,"id":1300,"node":1301,"title":1302,"subtitle":1303,"topic":1304,"track":214},"braking-into-the-battery",173,"Freiner pour recharger","Les voitures électriques se rechargent un peu à chaque ralentissement","Véhicules électriques",{"stage":169,"step":26,"id":1306,"node":1307,"title":1308,"subtitle":1309,"topic":1310,"track":72},"winning-at-rock-paper-scissors",174,"Gagner à pierre-feuille-ciseaux","Les humains sont nuls pour être aléatoires, et une machine peut en profiter","Théorie des jeux",{"stage":169,"step":33,"id":1312,"node":1313,"title":1314,"subtitle":1315,"topic":1316,"track":100},"the-vote-from-outer-space",175,"Le vote venu de l'espace","Un rayon cosmique a peut-être ajouté 4 096 voix à une élection belge","Informatique binaire",{"stage":169,"step":40,"id":1318,"node":1319,"title":1320,"subtitle":1321,"topic":1322,"track":303},"fast-internet-slow-pages",176,"Internet rapide, pages lentes","La bande passante n'est pas la vitesse : les allers-retours s'additionnent","Performances réseau",{"stage":169,"step":46,"id":1324,"node":1325,"title":1326,"subtitle":1327,"topic":1328,"track":114},"why-characters-fall-through-walls",177,"Pourquoi les personnages traversent les murs","Les jeux cherchent les collisions par instantanés, et ce qui va vite se faufile entre eux","Physique des jeux",{"stage":169,"step":53,"id":1330,"node":1331,"title":1332,"subtitle":1333,"topic":246,"track":247},"the-enigma-machine",178,"La machine Enigma","158 trillions de réglages, changés chaque jour",{"stage":169,"step":60,"id":1335,"node":1336,"title":1337,"subtitle":1338,"topic":253,"track":247},"breaking-enigma",179,"Casser Enigma","Elle est tombée par des habitudes, des suppositions et une salle pleine de machines",{"stage":169,"step":67,"id":1340,"node":1341,"title":1342,"subtitle":1343,"topic":315,"track":17},"greedy-change",180,"La monnaie gloutonne","Toujours rendre la plus grosse pièce marche souvent, jusqu'au jour où ça ne marche plus",[1345,1346,1347,1348,1349,1350,1351],{"track":72,"count":19},{"track":247,"count":19},{"track":214,"count":5},{"track":100,"count":5},{"track":303,"count":5},{"track":114,"count":5},{"track":17,"count":5},{"zone":175,"theme":291,"lessons":1353,"topics":1403},[1354,1359,1365,1370,1375,1381,1387,1392,1397],{"stage":175,"step":5,"id":1355,"node":1356,"title":1357,"subtitle":1358,"topic":1310,"track":72},"the-prisoners-dilemma",181,"Le dilemme du prisonnier","Deux personnes qui agissent malin peuvent toutes deux y perdre",{"stage":175,"step":19,"id":1360,"node":1361,"title":1362,"subtitle":1363,"topic":1364,"track":322},"the-safety-factor",182,"Le coefficient de sécurité","Les ingénieurs construisent des choses plusieurs fois plus solides que nécessaire","Calcul des structures",{"stage":175,"step":26,"id":1366,"node":1367,"title":1368,"subtitle":1369,"topic":207,"track":72},"the-rule-of-72",183,"La règle de 72","Divise 72 par le taux d'intérêt pour savoir en combien de temps l'argent double",{"stage":175,"step":33,"id":1371,"node":1372,"title":1373,"subtitle":1374,"topic":23,"track":24},"why-the-bus-always-takes-longer",184,"Pourquoi le bus met toujours plus longtemps","Tu as plus de chances d'arriver pendant un long écart",{"stage":175,"step":40,"id":1376,"node":1377,"title":1378,"subtitle":1379,"topic":1380,"track":31},"how-mp3-throws-sound-away",185,"Comment le MP3 jette du son","Il efface des sons que ton oreille n'entendrait de toute façon pas","Perception du son",{"stage":175,"step":46,"id":1382,"node":1383,"title":1384,"subtitle":1385,"topic":1386,"track":271},"the-universes-speed-limit",186,"La limite de vitesse de l'Univers","Rien ne dépasse la lumière, et ça change le temps lui-même","Relativité",{"stage":175,"step":53,"id":1388,"node":1389,"title":1390,"subtitle":1391,"topic":1386,"track":271},"einstein-in-your-pocket",187,"Einstein dans ta poche","Sans la relativité, la carte de ton téléphone se tromperait de kilomètres",{"stage":175,"step":60,"id":1393,"node":1394,"title":1395,"subtitle":1396,"topic":339,"track":145},"the-mother-of-all-demos",188,"La mère de toutes les démos","En 1968, un homme a montré la souris, l'hypertexte et les appels vidéo",{"stage":175,"step":67,"id":1398,"node":1399,"title":1400,"subtitle":1401,"topic":1402,"track":51},"the-lawyer-who-cited-fake-cases",189,"L'avocat qui citait de fausses affaires","En 2023, un avocat a cité six affaires judiciaires inventées par une IA","Culture de l'IA",[1404,1405,1406,1407,1408,1409,1410],{"track":72,"count":19},{"track":271,"count":19},{"track":322,"count":5},{"track":24,"count":5},{"track":31,"count":5},{"track":145,"count":5},{"track":51,"count":5},{"zone":181,"theme":363,"lessons":1412,"topics":1466},[1413,1418,1424,1430,1436,1442,1448,1454,1460],{"stage":181,"step":5,"id":1414,"node":1415,"title":1416,"subtitle":1417,"topic":178,"track":72},"why-bubbles-are-round",190,"Pourquoi les bulles sont rondes","Une sphère contient le plus d'air avec le moins de peau",{"stage":181,"step":19,"id":1419,"node":1420,"title":1421,"subtitle":1422,"topic":1423,"track":65},"the-mcgurk-effect",191,"L'effet McGurk","Ce que tu vois change ce que tu entends","Perception multisensorielle",{"stage":181,"step":26,"id":1425,"node":1426,"title":1427,"subtitle":1428,"topic":1429,"track":72},"the-hat-puzzle",192,"L'énigme des chapeaux","Une équipe peut se coordonner parfaitement sans parler","Logique",{"stage":181,"step":33,"id":1431,"node":1432,"title":1433,"subtitle":1434,"topic":1435,"track":38},"the-northern-lights",193,"Les aurores boréales","Le vent solaire peint le ciel en excitant des gaz très haut au-dessus de nous","Météo spatiale",{"stage":181,"step":40,"id":1437,"node":1438,"title":1439,"subtitle":1440,"topic":1441,"track":100},"the-transistor",194,"Le transistor","Un interrupteur sans pièce mobile, et ton téléphone en a des milliards","Électronique",{"stage":181,"step":46,"id":1443,"node":1444,"title":1445,"subtitle":1446,"topic":1447,"track":58},"the-web-is-rotting",195,"Le Web pourrit","La moitié des liens des arrêts de la Cour suprême des États-Unis ne marchent plus","Architecture du Web",{"stage":181,"step":53,"id":1449,"node":1450,"title":1451,"subtitle":1452,"topic":1453,"track":107},"your-mothers-maiden-name",196,"Le nom de jeune fille de ta mère","Les réponses aux questions de sécurité sont souvent sur tes propres réseaux sociaux","Récupération de compte",{"stage":181,"step":60,"id":1455,"node":1456,"title":1457,"subtitle":1458,"topic":1459,"track":247},"clock-maths",197,"Les maths de l'horloge","Les nombres géants révèlent leur fin quand on compte comme une horloge","Arithmétique modulaire",{"stage":181,"step":67,"id":1461,"node":1462,"title":1463,"subtitle":1464,"topic":1465,"track":271},"electricity-is-slow",198,"L'électricité est lente","Les électrons rampent dans un fil ; le signal file","Électricité",[1467,1468,1469,1470,1471,1472,1473,1474],{"track":72,"count":19},{"track":65,"count":5},{"track":38,"count":5},{"track":100,"count":5},{"track":58,"count":5},{"track":107,"count":5},{"track":247,"count":5},{"track":271,"count":5},{"zone":187,"theme":433,"lessons":1476,"topics":1530},[1477,1482,1488,1494,1500,1506,1512,1518,1524],{"stage":187,"step":5,"id":1478,"node":1479,"title":1480,"subtitle":1481,"topic":1084,"track":72},"stir-your-coffee-one-point-stays-put",199,"Remue ton café : un point reste en place","Tu as beau remuer, une goutte finit là où elle était",{"stage":187,"step":19,"id":1483,"node":1484,"title":1485,"subtitle":1486,"topic":1487,"track":214},"why-wind-turbines-have-three-blades",200,"Pourquoi les éoliennes ont trois pales","Ni deux, ni quatre : trois, c'est l'idéal","Énergie éolienne",{"stage":187,"step":26,"id":1489,"node":1490,"title":1491,"subtitle":1492,"topic":1493,"track":100},"stack-overflow",201,"Dépassement de pile","Le plantage qui a donné son nom au célèbre site des programmeurs","Informatique",{"stage":187,"step":33,"id":1495,"node":1496,"title":1497,"subtitle":1498,"topic":1499,"track":303},"the-internet-is-a-stack-of-envelopes",202,"Internet est une pile d'enveloppes","La communication mondiale marche parce que chaque couche a une seule tâche","Protocoles réseau",{"stage":187,"step":40,"id":1501,"node":1502,"title":1503,"subtitle":1504,"topic":1505,"track":114},"jaggies",203,"Crénelage","Flouter un peu les pixels du bord rend les diagonales lisses","Graphisme matriciel",{"stage":187,"step":46,"id":1507,"node":1508,"title":1509,"subtitle":1510,"topic":1511,"track":17},"the-unbeatable-tic-tac-toe",204,"Le morpion imbattable","Un ordinateur qui anticipe chaque coup ne peut jamais perdre","IA de jeu",{"stage":187,"step":53,"id":1513,"node":1514,"title":1515,"subtitle":1516,"topic":1517,"track":322},"the-elevator-counterweight",205,"Le contrepoids de l'ascenseur","Un poids caché, et le moteur ne soulève presque rien","Génie mécanique",{"stage":187,"step":60,"id":1519,"node":1520,"title":1521,"subtitle":1522,"topic":1523,"track":24},"why-the-other-queue-always-moves-faster",206,"Pourquoi l'autre file avance toujours plus vite","Avec trois files, la tienne n'est la plus rapide qu'une fois sur trois","Théorie des files d'attente",{"stage":187,"step":67,"id":1525,"node":1526,"title":1527,"subtitle":1528,"topic":1529,"track":303},"why-wi-fi-dies-in-the-kitchen",207,"Pourquoi le Wi-Fi meurt dans la cuisine","Micro-ondes, murs et eau : tous combattent ton signal","Réseaux sans fil",[1531,1532,1533,1534,1535,1536,1537,1538],{"track":303,"count":19},{"track":72,"count":5},{"track":214,"count":5},{"track":100,"count":5},{"track":114,"count":5},{"track":17,"count":5},{"track":322,"count":5},{"track":24,"count":5},{"zone":193,"theme":500,"lessons":1540,"topics":1593},[1541,1547,1552,1558,1564,1570,1576,1581,1587],{"stage":193,"step":5,"id":1542,"node":1543,"title":1544,"subtitle":1545,"topic":1546,"track":31},"44-100-snapshots-a-second",208,"44 100 clichés par seconde","L'audio numérique est une suite de mesures, pas une onde","Audio numérique",{"stage":193,"step":19,"id":1548,"node":1549,"title":1550,"subtitle":1551,"topic":626,"track":145},"why-email-uses",209,"Pourquoi l'e-mail utilise @","L'auteur du premier e-mail a choisi la seule touche que personne n'utilisait",{"stage":193,"step":26,"id":1553,"node":1554,"title":1555,"subtitle":1556,"topic":1557,"track":51},"the-biased-mirror",210,"Le miroir biaisé","L'IA apprend les schémas injustes cachés dans ses données d'entraînement","Éthique de l'IA",{"stage":193,"step":33,"id":1559,"node":1560,"title":1561,"subtitle":1562,"topic":1563,"track":65},"the-rubber-hand-illusion",211,"L'illusion de la main en caoutchouc","Ton cerveau peut adopter une fausse main en quelques minutes","Science de la perception",{"stage":193,"step":40,"id":1565,"node":1566,"title":1567,"subtitle":1568,"topic":1569,"track":38},"space-junk",212,"Débris spatiaux","Une seule collision peut créer des milliers de balles en orbite","Mécanique orbitale",{"stage":193,"step":46,"id":1571,"node":1572,"title":1573,"subtitle":1574,"topic":1575,"track":114},"how-jpeg-shrinks-photos",213,"Comment le JPEG compresse les photos","Les photos rétrécissent en jetant des détails que tes yeux remarquent à peine","Compression d'images",{"stage":193,"step":53,"id":1577,"node":1578,"title":1579,"subtitle":1580,"topic":1084,"track":72},"two-opposite-places-with-the-same-weather",214,"Deux lieux opposés avec la même météo","En ce moment, deux points opposés de la Terre ont la même température et la même pression",{"stage":193,"step":60,"id":1582,"node":1583,"title":1584,"subtitle":1585,"topic":1586,"track":58},"the-internets-attic",215,"Le grenier d'internet","Des centaines de milliards d'anciennes pages web sont conservées dans une seule archive","Archivage du web",{"stage":193,"step":67,"id":1588,"node":1589,"title":1590,"subtitle":1591,"topic":1592,"track":107},"the-evil-twin",216,"Le jumeau maléfique","Un faux point d'accès peut emprunter le nom d'un réseau de confiance","Sécurité sans fil",[1594,1595,1596,1597,1598,1599,1600,1601,1602],{"track":31,"count":5},{"track":145,"count":5},{"track":51,"count":5},{"track":65,"count":5},{"track":38,"count":5},{"track":114,"count":5},{"track":72,"count":5},{"track":58,"count":5},{"track":107,"count":5},{"zone":198,"theme":569,"lessons":1604,"topics":1657},[1605,1611,1617,1623,1628,1634,1640,1646,1651],{"stage":198,"step":5,"id":1606,"node":1607,"title":1608,"subtitle":1609,"topic":1610,"track":247},"end-to-end-encryption",217,"Chiffrement de bout en bout","Même l'entreprise de messagerie ne peut pas lire tes messages","Messagerie sécurisée",{"stage":198,"step":19,"id":1612,"node":1613,"title":1614,"subtitle":1615,"topic":1616,"track":271},"the-big-bang-on-your-old-tv",218,"Le Big Bang sur ta vieille télé","Une partie de la neige des télés analogiques est la plus vieille lumière de l'univers","Cosmologie",{"stage":198,"step":26,"id":1618,"node":1619,"title":1620,"subtitle":1621,"topic":1622,"track":214},"the-colour-of-heat",219,"La couleur de la chaleur","Les objets chauds révèlent leur température par la couleur de leur lueur","Rayonnement thermique",{"stage":198,"step":33,"id":1624,"node":1625,"title":1626,"subtitle":1627,"topic":797,"track":100},"the-spinning-beach-ball",220,"Le ballon de plage qui tourne","Une seule tâche occupée peut figer toute une app",{"stage":198,"step":40,"id":1629,"node":1630,"title":1631,"subtitle":1632,"topic":1633,"track":303},"one-address-a-whole-house",221,"Une adresse pour toute la maison","Ton routeur cache tous tes appareils derrière une seule adresse publique","Réseau domestique",{"stage":198,"step":46,"id":1635,"node":1636,"title":1637,"subtitle":1638,"topic":1639,"track":114},"white-balance",222,"La balance des blancs","Les appareils photo devinent la couleur de la lumière pour que le blanc paraisse blanc","Photographie",{"stage":198,"step":53,"id":1641,"node":1642,"title":1643,"subtitle":1644,"topic":1645,"track":322},"metal-with-a-memory",223,"Un métal qui a de la mémoire","Certains métaux reprennent leur forme quand on les chauffe","Science des matériaux",{"stage":198,"step":60,"id":1647,"node":1648,"title":1649,"subtitle":1650,"topic":315,"track":17},"how-maps-find-your-route",224,"Comment les cartes trouvent ton itinéraire","Ton appli de navigation explore vers l'extérieur, comme une onde",{"stage":198,"step":67,"id":1652,"node":1653,"title":1654,"subtitle":1655,"topic":1656,"track":24},"finding-pi-with-needles",225,"Trouver pi avec des aiguilles","Pi apparaît dans un jeu sans aucun cercle","Mathématiques",[1658,1659,1660,1661,1662,1663,1664,1665,1666],{"track":247,"count":5},{"track":271,"count":5},{"track":214,"count":5},{"track":100,"count":5},{"track":303,"count":5},{"track":114,"count":5},{"track":322,"count":5},{"track":17,"count":5},{"track":24,"count":5},{"zone":204,"theme":637,"lessons":1668,"topics":1719},[1669,1674,1680,1685,1691,1697,1702,1708,1713],{"stage":204,"step":5,"id":1670,"node":1671,"title":1672,"subtitle":1673,"topic":315,"track":17},"the-paint-bucket",226,"Le pot de peinture","Remplir une forme, c'est une recherche dans un graphe déguisée",{"stage":204,"step":19,"id":1675,"node":1676,"title":1677,"subtitle":1678,"topic":1679,"track":31},"the-foley-artist",227,"Le bruiteur","Au cinéma, les coups de poing sont souvent du céleri et des blousons en cuir","Conception sonore",{"stage":204,"step":26,"id":1681,"node":1682,"title":1683,"subtitle":1684,"topic":626,"track":145},"the-first-spam",228,"Le premier spam","En 1978, une pub envoyée par e-mail à 400 personnes les a rendues furieuses",{"stage":204,"step":33,"id":1686,"node":1687,"title":1688,"subtitle":1689,"topic":1690,"track":51},"the-panda-that-became-a-gibbon",229,"Le panda devenu gibbon","Des changements invisibles peuvent tromper complètement la reconnaissance d'images","Sécurité de l'IA",{"stage":204,"step":40,"id":1692,"node":1693,"title":1694,"subtitle":1695,"topic":1696,"track":65},"the-flash-lag-illusion",230,"L'illusion du flash-lag","Ce qui bouge semble en avance sur sa vraie place","Illusions de mouvement",{"stage":204,"step":46,"id":1698,"node":1699,"title":1700,"subtitle":1701,"topic":529,"track":38},"why-rockets-launch-east",231,"Pourquoi les fusées partent vers l'est","La rotation de la Terre donne à chaque fusée une poussée gratuite",{"stage":204,"step":53,"id":1703,"node":1704,"title":1705,"subtitle":1706,"topic":1707,"track":322},"the-wobbly-bridge",232,"Le pont qui tanguait","Le Millennium Bridge de Londres a oscillé parce que les piétons se sont mis au pas","Mathématiques appliquées",{"stage":204,"step":60,"id":1709,"node":1710,"title":1711,"subtitle":1712,"topic":178,"track":72},"only-five-perfect-dice",233,"Seulement cinq dés parfaits","Il existe exactement cinq formes aux faces régulières identiques",{"stage":204,"step":67,"id":1714,"node":1715,"title":1716,"subtitle":1717,"topic":1718,"track":58},"the-cloud-is-a-building",234,"Le cloud est un bâtiment","Tes photos vivent dans d'immenses entrepôts remplis d'ordinateurs qui ronronnent","Informatique en nuage",[1720,1721,1722,1723,1724,1725,1726,1727,1728],{"track":17,"count":5},{"track":31,"count":5},{"track":145,"count":5},{"track":51,"count":5},{"track":65,"count":5},{"track":38,"count":5},{"track":322,"count":5},{"track":72,"count":5},{"track":58,"count":5},{"zone":210,"theme":708,"lessons":1730,"topics":1782},[1731,1736,1742,1747,1753,1759,1765,1771,1777],{"stage":210,"step":5,"id":1732,"node":1733,"title":1734,"subtitle":1735,"topic":1592,"track":107},"the-relay-theft",235,"Le vol par relais","Des voleurs peuvent étirer le signal de ta clé de voiture depuis l'intérieur de chez toi",{"stage":210,"step":19,"id":1737,"node":1738,"title":1739,"subtitle":1740,"topic":1741,"track":247},"the-byzantine-generals",236,"Les généraux byzantins","Comment s'accorder sur un plan quand certains messagers mentent ?","Systèmes distribués",{"stage":210,"step":26,"id":1743,"node":1744,"title":1745,"subtitle":1746,"topic":1386,"track":271},"time-runs-faster-upstairs",237,"Le temps passe plus vite à l'étage","Les horloges atomiques avancent plus vite à seulement 33 centimètres plus haut",{"stage":210,"step":33,"id":1748,"node":1749,"title":1750,"subtitle":1751,"topic":1752,"track":214},"water-that-freezes-on-command",238,"L'eau qui gèle sur commande","Un liquide tranquille peut rester sous zéro jusqu'à ce que quelque chose le dérange","Transitions de phase",{"stage":210,"step":40,"id":1754,"node":1755,"title":1756,"subtitle":1757,"topic":1758,"track":24},"the-99-test-thats-usually-wrong",239,"Le test fiable à 99 % qui se trompe souvent","Avec une maladie rare, la plupart des résultats positifs peuvent être de fausses alertes","Analyse des menaces",{"stage":210,"step":46,"id":1760,"node":1761,"title":1762,"subtitle":1763,"topic":1764,"track":100},"deadlock",240,"L'interblocage","Deux programmes peuvent s'attendre l'un l'autre pour toujours","Concurrence",{"stage":210,"step":53,"id":1766,"node":1767,"title":1768,"subtitle":1769,"topic":1770,"track":303},"why-wi-fi-slows-down-in-a-crowd",241,"Pourquoi le Wi-Fi ralentit dans la foule","Sur un canal, un seul appareil peut parler à la fois","Communication sans fil",{"stage":210,"step":60,"id":1772,"node":1773,"title":1774,"subtitle":1775,"topic":1776,"track":114},"panorama-glitches",242,"Les ratés du panorama","En panorama, les gens qui bougent deviennent des monstres","Photographie computationnelle",{"stage":210,"step":67,"id":1778,"node":1779,"title":1780,"subtitle":1781,"topic":315,"track":17},"bill-gates-pancake-problem",243,"Le problème des pancakes de Bill Gates","Son seul article de recherche portait sur le retournement de pancakes",[1783,1784,1785,1786,1787,1788,1789,1790,1791],{"track":107,"count":5},{"track":247,"count":5},{"track":271,"count":5},{"track":214,"count":5},{"track":24,"count":5},{"track":100,"count":5},{"track":303,"count":5},{"track":114,"count":5},{"track":17,"count":5},{"zone":231,"theme":775,"lessons":1793,"topics":1847},[1794,1800,1806,1812,1818,1824,1830,1835,1841],{"stage":231,"step":5,"id":1795,"node":1796,"title":1797,"subtitle":1798,"topic":1799,"track":322},"how-drones-hover",244,"Comment les drones font du surplace","Quatre moteurs corrigent sans cesse une machine qui veut basculer","Robotique aérienne",{"stage":231,"step":19,"id":1801,"node":1802,"title":1803,"subtitle":1804,"topic":1805,"track":24},"cheese-and-bedsheets",245,"Fromage et draps","Fouillez assez de données et vous trouverez des absurdités impressionnantes","Exploration de données",{"stage":231,"step":26,"id":1807,"node":1808,"title":1809,"subtitle":1810,"topic":1811,"track":31},"why-phone-calls-sound-muffled",246,"Pourquoi les appels sonnent étouffés","Les lignes téléphoniques coupent les fréquences qui distinguent le ‘f’ du ‘s’","Télécommunications",{"stage":231,"step":33,"id":1813,"node":1814,"title":1815,"subtitle":1816,"topic":1817,"track":145},"the-leap-second-that-crashed-websites",247,"La seconde intercalaire qui a fait planter des sites","En 2012, une seconde en plus a fait tomber des sites connus","Bugs logiciels",{"stage":231,"step":40,"id":1819,"node":1820,"title":1821,"subtitle":1822,"topic":1823,"track":51},"the-wolf-detector-that-saw-snow",248,"Le détecteur de loups qui voyait la neige","Une IA peut reconnaître le fond au lieu de l'objet","Robustesse des modèles",{"stage":231,"step":46,"id":1825,"node":1826,"title":1827,"subtitle":1828,"topic":1829,"track":65},"the-hollow-mask",249,"Le masque creux","Ton cerveau refuse de voir un visage creux","Illusions d'optique",{"stage":231,"step":53,"id":1831,"node":1832,"title":1833,"subtitle":1834,"topic":660,"track":38},"why-2100-wont-be-a-leap-year",250,"Pourquoi 2100 ne sera pas bissextile","Le calendrier a une règle pour sa règle",{"stage":231,"step":60,"id":1836,"node":1837,"title":1838,"subtitle":1839,"topic":1840,"track":72},"the-golden-ratio-myth",251,"Le mythe du nombre d'or","Le nombre préféré de la nature existe, mais on l'a beaucoup trop vanté","Motifs mathématiques",{"stage":231,"step":67,"id":1842,"node":1843,"title":1844,"subtitle":1845,"topic":1846,"track":31},"how-shazam-hears-a-song",252,"Comment Shazam reconnaît une chanson","Quelques secondes de son bruité deviennent une empreinte unique","Reconnaissance audio",[1848,1849,1850,1851,1852,1853,1854,1855],{"track":31,"count":19},{"track":322,"count":5},{"track":24,"count":5},{"track":145,"count":5},{"track":51,"count":5},{"track":65,"count":5},{"track":38,"count":5},{"track":72,"count":5},{"zone":237,"theme":842,"lessons":1857,"topics":1910},[1858,1864,1870,1875,1881,1887,1892,1898,1904],{"stage":237,"step":5,"id":1859,"node":1860,"title":1861,"subtitle":1862,"topic":1863,"track":58},"the-red-dot",253,"Le point rouge","Une petite pastille fait d'une tâche inachevée une démangeaison","Design de l'attention",{"stage":237,"step":19,"id":1865,"node":1866,"title":1867,"subtitle":1868,"topic":1869,"track":107},"why-car-keys-never-repeat-themselves",254,"Pourquoi les clés de voiture ne se répètent jamais","Chaque appui sur ta télécommande envoie un code qui ne marchera plus jamais","Sécurité des protocoles",{"stage":237,"step":26,"id":1871,"node":1872,"title":1873,"subtitle":1874,"topic":415,"track":271},"youve-never-touched-anything",255,"Tu n'as jamais rien touché","Les électrons repoussent avant que les atomes se rencontrent",{"stage":237,"step":33,"id":1876,"node":1877,"title":1878,"subtitle":1879,"topic":1880,"track":214},"why-pasta-cooks-slowly-on-everest",256,"Pourquoi les pâtes cuisent lentement sur l'Everest","L'eau bout à plus basse température quand l'air est rare","Chimie physique",{"stage":237,"step":40,"id":1882,"node":1883,"title":1884,"subtitle":1885,"topic":1886,"track":145},"the-computer-that-flew-to-the-moon",257,"L'ordinateur qui a volé jusqu'à la Lune","L'ordinateur de guidage d'Apollo avait environ 4 Ko de mémoire vive","Informatique spatiale",{"stage":237,"step":46,"id":1888,"node":1889,"title":1890,"subtitle":1891,"topic":1886,"track":145},"apollos-1202-alarm",258,"L'alarme 1202 d'Apollo","Quelques minutes avant d'atterrir sur la Lune, l'ordinateur a affiché des erreurs",{"stage":237,"step":53,"id":1893,"node":1894,"title":1895,"subtitle":1896,"topic":1897,"track":100},"the-race-condition",259,"La situation de concurrence","Des étapes correctes peuvent mal tourner quand elles arrivent au même moment","Programmation concurrente",{"stage":237,"step":60,"id":1899,"node":1900,"title":1901,"subtitle":1902,"topic":1903,"track":303},"why-its-called-a-cell-phone",260,"Pourquoi on parle de réseau cellulaire","Le territoire est découpé en « cellules » qui réutilisent les mêmes fréquences radio","Réseaux cellulaires",{"stage":237,"step":67,"id":1905,"node":1906,"title":1907,"subtitle":1908,"topic":1909,"track":114},"dark-mode-saves-battery-sometimes",261,"Le mode sombre économise la batterie, parfois","Sur les écrans OLED, les pixels noirs sont éteints","Technologie des écrans",[1911,1912,1913,1914,1915,1916,1917,1918],{"track":145,"count":19},{"track":58,"count":5},{"track":107,"count":5},{"track":271,"count":5},{"track":214,"count":5},{"track":100,"count":5},{"track":303,"count":5},{"track":114,"count":5},{"zone":243,"theme":908,"lessons":1920,"topics":1973},[1921,1927,1932,1938,1944,1951,1957,1962,1968],{"stage":243,"step":5,"id":1922,"node":1923,"title":1924,"subtitle":1925,"topic":1926,"track":17},"evolution-inside-a-computer",262,"L'évolution dans un ordinateur","La NASA a fait évoluer une antenne qu'aucun ingénieur n'aurait dessinée","Algorithmes génétiques",{"stage":243,"step":19,"id":1928,"node":1929,"title":1930,"subtitle":1931,"topic":958,"track":322},"lift-a-car-with-one-hand",263,"Soulever une voiture d'une main","Les poulies répartissent une lourde charge sur de nombreux brins",{"stage":243,"step":26,"id":1933,"node":1934,"title":1935,"subtitle":1936,"topic":1937,"track":24},"the-wisdom-of-the-crowd",264,"La sagesse des foules","800 estimations de foire, en moyenne, ont trouvé le poids d'un bœuf","Apprentissage ensembliste",{"stage":243,"step":33,"id":1939,"node":1940,"title":1941,"subtitle":1942,"topic":1943,"track":31},"the-sound-only-teenagers-hear",265,"Le son que seuls les ados entendent","On perd les notes les plus aiguës en vieillissant","Audition",{"stage":243,"step":40,"id":1945,"node":1946,"title":1947,"subtitle":1948,"topic":1949,"track":1950},"iloveyou",266,"Le ver ILOVEYOU","Une lettre d'amour a infecté des dizaines de millions d'ordinateurs en 2000","Histoire du piratage","Histoire de l'informatique et bugs légendaires",{"stage":243,"step":46,"id":1952,"node":1953,"title":1954,"subtitle":1955,"topic":1956,"track":65},"the-memory-palace",267,"Le palais de la mémoire","Les champions de mémoire rangent des listes en parcourant des pièces imaginaires","Sciences de l'apprentissage",{"stage":243,"step":53,"id":1958,"node":1959,"title":1960,"subtitle":1961,"topic":351,"track":51},"learning-from-examples",268,"Apprendre par l'exemple","Les machines apprennent des règles que personne n'a écrites en voyant des exemples",{"stage":243,"step":60,"id":1963,"node":1964,"title":1965,"subtitle":1966,"topic":1967,"track":51},"how-a-machine-learns",269,"Comment une machine apprend","Un modèle progresse en suivant de petites pentes vers des erreurs plus petites","Apprentissage profond",{"stage":243,"step":67,"id":1969,"node":1970,"title":1971,"subtitle":1972,"topic":380,"track":38},"looking-into-the-past",270,"Regarder dans le passé","Tu vois le Soleil tel qu'il était il y a huit minutes",[1974,1975,1976,1977,1978,1979,1980,1981],{"track":51,"count":19},{"track":17,"count":5},{"track":322,"count":5},{"track":24,"count":5},{"track":31,"count":5},{"track":1950,"count":5},{"track":65,"count":5},{"track":38,"count":5},{"stage":243,"step":33,"node":1940,"id":1939,"language":1983,"title":1941,"subtitle":1942,"topic":1943,"track":31,"is_supernode":1984,"languages":1985,"hash":1990,"intro":1991,"num_slides":46,"num_questions":40,"minutes":26},"fr",false,[1986,1987,1988,1983,1989],"de","es","es-419","it","2f953679557e2ad9",{"icon":1992,"hook":1993,"discover":1994,"why":1998},"ear.fill","Des magasins ont diffusé un bourdonnement qui chasse les ados, et la plupart des adultes n'entendent rien. Pourquoi seuls les jeunes l'entendent-ils ?",[1995,1996,1997],"Jusqu'où montent tes oreilles","Où vivent les aigus dans l'oreille","Pourquoi les aigus s'effacent avec l'âge","Chaque oreille a une note la plus haute, qui descend au fil de la vie. Savoir pourquoi t'aide à prendre soin des tiennes."]