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mazes",{"stage":116,"step":46,"id":746,"node":747,"title":748,"subtitle":749,"topic":198,"track":342},"why-three-legs-never-wobble",93,"Why Three Legs Never Wobble","Three points always fit a surface; four often don't",{"stage":116,"step":53,"id":751,"node":752,"title":753,"subtitle":754,"topic":755,"track":44},"when-the-average-lies",94,"When the Average Lies","A billionaire walks into a bar and everyone gets rich on average","Statistics",{"stage":116,"step":60,"id":757,"node":758,"title":759,"subtitle":760,"topic":761,"track":51},"the-doppler-effect",95,"The Doppler Effect","Motion changes the pitch of sound and the color of light","Wave Physics",{"stage":116,"step":66,"id":763,"node":764,"title":765,"subtitle":766,"topic":767,"track":85},"the-stroop-effect",96,"The Stroop Effect","Saying the color of a word is hard when the word names another color","Cognitive 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itself",{"stage":184,"step":53,"id":1268,"node":1269,"title":1270,"subtitle":1271,"topic":1272,"track":58},"escape-speed",166,"Escape Speed","Leaving Earth for good needs about 11 kilometers a second","Astrodynamics",{"stage":184,"step":60,"id":1274,"node":1275,"title":1276,"subtitle":1277,"topic":1278,"track":78},"error-418-im-a-teapot",167,"Error 418: I'm a Teapot","An April Fools' joke that became part of real internet standards","Internet Culture",{"stage":184,"step":66,"id":1280,"node":1281,"title":1282,"subtitle":1283,"topic":1152,"track":234},"the-war-of-the-currents",168,"The War of the Currents","Edison and Tesla fought over how electricity should reach your home",{"stage":184,"step":73,"id":1285,"node":1286,"title":1287,"subtitle":1288,"topic":1289,"track":127},"credential-stuffing",169,"Credential Stuffing","One leaked password can open many unrelated accounts","Password Hygiene",{"stage":184,"step":80,"id":1291,"node":1292,"title":1293,"subtitle":1294,"topic":1295,"track":267},"the-prime-lock",170,"The Prime Lock","Multiplying is easy; un-multiplying is the secret behind online security","Number Theory",{"stage":184,"step":87,"id":1297,"node":1298,"title":1299,"subtitle":1300,"topic":1301,"track":291},"ghost-particles",171,"Ghost Particles","Trillions of neutrinos pass through you every second","Particle Physics",[1303,1304,1305,1306,1307,1308,1309,1310],{"track":92,"count":39},{"track":85,"count":25},{"track":58,"count":25},{"track":78,"count":25},{"track":234,"count":25},{"track":127,"count":25},{"track":267,"count":25},{"track":291,"count":25},{"zone":189,"theme":243,"lessons":1312,"topics":1364},[1313,1319,1325,1331,1337,1343,1349,1354,1359],{"stage":189,"step":25,"id":1314,"node":1315,"title":1316,"subtitle":1317,"topic":1318,"track":92},"the-friendship-paradox",172,"The Friendship Paradox","Your friends probably have more friends than you do","Network Mathematics",{"stage":189,"step":39,"id":1320,"node":1321,"title":1322,"subtitle":1323,"topic":1324,"track":234},"braking-into-the-battery",173,"Braking Into the Battery","Electric cars recharge a little every time they slow down","Electric Vehicles",{"stage":189,"step":46,"id":1326,"node":1327,"title":1328,"subtitle":1329,"topic":1330,"track":92},"winning-at-rock-paper-scissors",174,"Winning at Rock-Paper-Scissors","Humans are bad at being random, and a machine can exploit it","Game Theory",{"stage":189,"step":53,"id":1332,"node":1333,"title":1334,"subtitle":1335,"topic":1336,"track":120},"the-vote-from-outer-space",175,"The Vote From Outer Space","A cosmic ray may have added 4,096 votes in a Belgian election","Binary Computing",{"stage":189,"step":60,"id":1338,"node":1339,"title":1340,"subtitle":1341,"topic":1342,"track":323},"fast-internet-slow-pages",176,"Fast Internet, Slow Pages","Bandwidth isn't speed; round trips add up","Network Performance",{"stage":189,"step":66,"id":1344,"node":1345,"title":1346,"subtitle":1347,"topic":1348,"track":134},"why-characters-fall-through-walls",177,"Why Characters Fall Through Walls","Games check for collisions in snapshots, and fast things slip between them","Game Physics",{"stage":189,"step":73,"id":1350,"node":1351,"title":1352,"subtitle":1353,"topic":266,"track":267},"the-enigma-machine",178,"The Enigma Machine","158 quintillion settings, changed every single day",{"stage":189,"step":80,"id":1355,"node":1356,"title":1357,"subtitle":1358,"topic":273,"track":267},"breaking-enigma",179,"Breaking Enigma","It fell to habits, guesses and a room full of machines",{"stage":189,"step":87,"id":1360,"node":1361,"title":1362,"subtitle":1363,"topic":335,"track":37},"greedy-change",180,"Greedy Change","Always giving the biggest coin usually works, until it doesn't",[1365,1366,1367,1368,1369,1370,1371],{"track":92,"count":39},{"track":267,"count":39},{"track":234,"count":25},{"track":120,"count":25},{"track":323,"count":25},{"track":134,"count":25},{"track":37,"count":25}]