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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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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":33,"step":46,"node":261,"id":260,"language":1983,"title":262,"subtitle":263,"topic":264,"track":247,"is_supernode":1984,"languages":1985,"hash":1990,"intro":1991,"num_slides":53,"num_questions":40,"minutes":33},"fr",true,[1986,1987,1988,1983,1989],"de","es","es-419","it","e1cbfa456d157dbb",{"icon":1992,"hook":1993,"discover":1994,"why":1998},"person.line.dotted.person.fill","Deux inconnus crient à travers une foule et finissent par partager un secret que nul autre ne connaît. Impossible ? Ton téléphone le fait sans arrêt.",[1995,1996,1997],"Ce que la peinture a à voir avec les clés","Pourquoi tout entendre ne suffit pas","Les maths derrière le cadenas du navigateur","Cette astuce protège en silence presque chaque connexion sécurisée que tu établis, des applis bancaires aux discussions privées."]