Found 3 comments on HN
happy4crazy · 2011-04-24 · Original thread
If you like this kind of stuff, there are a couple of fun mental math books I can recommend:

It's really baffling that people don't teach this stuff in school.

tokenadult · 2010-03-29 · Original thread
It's interesting that the book cited in the submitted article

(this link is to the United States Amazon site, while the submitted article link was to

is written mostly by a professional mathematician, but with an introduction by an author who is a historian by higher education. Michael Shermer writes a number of interesting books,

of which my favorite is Why People Believe Weird Things: Pseudoscience, Superstition, and Other Confusions of Our Time.

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