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before atoms ever meet",{"stage":237,"step":33,"id":1876,"node":1877,"title":1878,"subtitle":1879,"topic":1880,"track":214},"why-pasta-cooks-slowly-on-everest",256,"Why Pasta Cooks Slowly on Everest","Water boils at a lower temperature when the air is thin","Physical Chemistry",{"stage":237,"step":40,"id":1882,"node":1883,"title":1884,"subtitle":1885,"topic":1886,"track":145},"the-computer-that-flew-to-the-moon",257,"The Computer That Flew to the Moon","Apollo's guidance computer had about 4 KB of working memory","Space Computing",{"stage":237,"step":46,"id":1888,"node":1889,"title":1890,"subtitle":1891,"topic":1886,"track":145},"apollos-1202-alarm",258,"Apollo's 1202 Alarm","Minutes before landing on the Moon, the computer started flashing errors",{"stage":237,"step":53,"id":1893,"node":1894,"title":1895,"subtitle":1896,"topic":1897,"track":100},"the-race-condition",259,"The Race Condition","Correct steps can go wrong when they happen at the same moment","Concurrent Computing",{"stage":237,"step":60,"id":1899,"node":1900,"title":1901,"subtitle":1902,"topic":1903,"track":303},"why-its-called-a-cell-phone",260,"Why It's Called a Cell Phone","The land is divided into ‘cells’ that reuse the same radio frequencies","Cellular Networks",{"stage":237,"step":67,"id":1905,"node":1906,"title":1907,"subtitle":1908,"topic":1909,"track":114},"dark-mode-saves-battery-sometimes",261,"Dark Mode Saves Battery, Sometimes","On OLED screens black pixels are switched off","Display Technology",[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":1972},[1921,1927,1932,1938,1944,1950,1956,1961,1967],{"stage":243,"step":5,"id":1922,"node":1923,"title":1924,"subtitle":1925,"topic":1926,"track":17},"evolution-inside-a-computer",262,"Evolution Inside a Computer","NASA evolved an antenna that no engineer would have designed","Genetic Algorithms",{"stage":243,"step":19,"id":1928,"node":1929,"title":1930,"subtitle":1931,"topic":958,"track":322},"lift-a-car-with-one-hand",263,"Lift a Car With One Hand","Pulleys spread a heavy load across many ropes",{"stage":243,"step":26,"id":1933,"node":1934,"title":1935,"subtitle":1936,"topic":1937,"track":24},"the-wisdom-of-the-crowd",264,"The Wisdom of the Crowd","800 fairground guesses, averaged, nailed an ox's weight","Ensemble Learning",{"stage":243,"step":33,"id":1939,"node":1940,"title":1941,"subtitle":1942,"topic":1943,"track":31},"the-sound-only-teenagers-hear",265,"The Sound Only Teenagers Hear","We lose the highest notes as we age","Hearing",{"stage":243,"step":40,"id":1945,"node":1946,"title":1947,"subtitle":1948,"topic":1949,"track":145},"iloveyou",266,"ILOVEYOU","A love letter infected tens of millions of computers in 2000","Hacking History",{"stage":243,"step":46,"id":1951,"node":1952,"title":1953,"subtitle":1954,"topic":1955,"track":65},"the-memory-palace",267,"The Memory Palace","Memory champions store lists by walking through imaginary rooms","Learning Science",{"stage":243,"step":53,"id":1957,"node":1958,"title":1959,"subtitle":1960,"topic":351,"track":51},"learning-from-examples",268,"Learning From Examples","Machines learn rules nobody wrote down by seeing examples",{"stage":243,"step":60,"id":1962,"node":1963,"title":1964,"subtitle":1965,"topic":1966,"track":51},"how-a-machine-learns",269,"How a Machine Learns","A model improves by following tiny slopes toward smaller mistakes","Deep Learning",{"stage":243,"step":67,"id":1968,"node":1969,"title":1970,"subtitle":1971,"topic":380,"track":38},"looking-into-the-past",270,"Looking Into the Past","You see the Sun as it was eight minutes ago",[1973,1974,1975,1976,1977,1978,1979,1980],{"track":51,"count":19},{"track":17,"count":5},{"track":322,"count":5},{"track":24,"count":5},{"track":31,"count":5},{"track":145,"count":5},{"track":65,"count":5},{"track":38,"count":5},{"stage":26,"step":5,"node":164,"id":163,"language":1982,"title":165,"subtitle":166,"topic":23,"track":24,"is_supernode":1983,"languages":1984,"hash":1990,"intro":1991,"num_slides":46,"num_questions":40,"minutes":26},"en",false,[1985,1986,1987,1988,1989],"de","es","es-419","fr","it","10266f7fb341e502",{"icon":1992,"hook":1993,"discover":1994,"why":1998},"shuffle","You hit shuffle, and the same artist plays twice in a row. Is your app rigged, or is that what random looks like?",[1995,1996,1997],"Which playlist is truly random","How often chance repeats an artist","Why random feels rigged to your brain","The same illusion makes gamblers bet on numbers that seem “due” and makes plain coincidences look planned."]