January 1, 2012 There's a handful of people — roughly 10 percent of the global population — that has something in common. Many mysteries and misconceptions surround this group. Its members have been called artistically gifted and self-reliant, but also untrustworthy and insincere. Most recently, several of them have been called the president of the United States. Yes, we're talking about left-handers. Author Rik Smits is left-handed himself, which was good preparation for his new book, The Puzzle of Left-handedness. He tells weekends on All Things Considered host Rebecca Sheir that extreme prejudice against left-handers is actually quite recent. "Throughout history, Western history that is ... there has always been a sort of negative whiff around left-handedness, because it was different, and therefore a bit, well, suspect," Smits says. But, he adds, most people didn't really care that much about it. Even the witch-hunters of the Middle Ages didn't c...