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If, in my nonfiction book, I write, "Under normal circumstances, water boils at 80 degrees celsius," then I am a liar, and there is nothing I can say after the fact that will excuse my behavior.

Malcolm Gladwell often writes lies in his nonfiction books. I have found myself personally deceived by some of his lies. For instance, on page 39 of Outliers, he writes:

The striking thing about Ericsson’s study is that he and his colleagues couldn’t find any “naturals”, musicians who floated effortlessly to the top while practicing a fraction of the time their peers did. Nor could they find any “grinds”, people who worked harder than everyone else, yet just didn’t have what it takes to break the top ranks.

The first time I read this passage, I thought it was one of the most extraordinary pieces of information I'd ever encountered. It meant that practice almost completely determines ability! I mostly believed that for more than 4 years. (And so did the rest of the world -- that's the core of the 10000 hours meme.)

It turns out that the passage is completely false. Ericsson's study did not actually say anything about individual violinists at all -- it only ever reported average statistics of groups of violinists.

Other studies of the relationship between total practice time and ability have found that different people may reach a given level of ability with enormously different practice totals. For instance a study of chess players found that the average amount of practice time needed to reach the Master level is ~11000 hours -- but the standard deviation of the distribution is more than 5000 hours. One person only took 3000 hours to reach Master level. Another took 23000 hours. [1]

Calling this kind of deception "being playful with ideas" is absurd.

[1] Note: I have not read the study in question. My info comes secondhand, from http://www.sportsscientists.com/2011/08/talent-training-and-... and http://www.outsideonline.com/outdoor-adventure/media/books/H....



Water does boil at 80 deg-C... depending on pressure (see its phase diagram). Of course "normal conditions" is the hedge. It's still useful to think about other facets of the "truth." Critical thinking is, indeed, the key.


Where do you expect to find humans at significantly high elevations like say, the peak of Mt Logan, BC, Canada (which is ~6km or 19k ft above sea level, where water does indeed boil at 80 deg C)?

I certainly wouldn't call that normal. Noone lives at those altitudes.


It's normal when you work in a physics or chemistry lab using vacuum chambers.




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