I never realized that biologists have been in a quandary about why there are left-handed people. Apparently, because the left brain and right side of the body are usually dominant and because left-handers are usually smaller and not as heavy as their right-handed counterparts, there's no real reason for lefties to exist, in evolutionary logic.
Two French scientists are postulating that left-handers are still around because "the strategic advantage of being left-handed in a fight is very real, simply because most right-handed people have little experience of fighting left-handers, but not vice versa," The Economist reports.
"While there is no suggestion that left-handed people are more violent than the right-handed, it looks as though they are more successfully violent." Gee, and I always thought it was a sign of creativity