Margaret Mead made a world-wide reputation for herself with her book Coming of Age in Samoa. After visiting the island of Samoa and talking to some teenage girls, she came away convinced that the Puritanism of the American sexual code was cultural artifact. In Samoa, by contrast, sex was freely practiced, with little attention to any niceties. Unfortunately, she was wrong about this, as we learned almost a half a century later, when Derek Freeman, who actually spoke Samoan, went to Samoa and interviewed the now grown women who had been interviewed by Margaret Mead many years earlier. He discovered that they had been putting her on. Decency and sexual restraint were as important to Samoans as to Americans.
Unfortunately, she was wrong about this, as we learned almost a half a century later, when Derek Freeman, who actually spoke Samoan, went to Samoa and interviewed the now grown women who had been interviewed by Margaret Mead many years earlier.
Freeman's case is not so clear-cut. From Skeptic Magazine:
The Trashing of Margaret Mead: How Derek Freeman Fooled Us All on an Alleged Hoax
A monthly thread for posting rationality-related quotes you've seen recently (or had stored in your quotesfile for ages).
ETA: It would seem that rationality quotes are no longer desired. After several days this thread stands voted into the negatives. Wolud whoever chose to to downvote this below 0 would care to express their disapproval of the regular quotes tradition more explicitly? Or perhaps they may like to browse around for some alternative posts that they could downvote instead of this one? Or, since we're in the business of quotation, they could "come on if they think they're hard enough!"