Lefties, you should feel very special
Only 1 in 10 humans are left handed. So why does it happen at all?
Thomas Merritt/The Conversation January 30, 2018
THE CANADIAN PRESS/Justin Tang
In graduate school, I earned beer money by modeling for life drawing classes in various art departments. (Don’t judge, grad school doesn’t pay well and beer isn’t free.) In the long hours standing around, I would survey the room and count how many of the aspiring artists were left-handed. Later in my career, I did the same thing—counting lefties, not standing around naked—in the biology classes I taught.
Funny thing: in any given class, around 10 percent of the students were lefties. It turns out this is true for all human populations, not only middle-America university classes. Globally, about 90 percent of people are righties. But why?
https://www.popsci.com/left-handed-rare-genetics
