ballplayers but left-handed people. believe it or not being a lefty was once seen as an evil stigma. but medical experts say that s not the case. if anything, it is a mystery. joining me to talk about what s scientifically right and rare about being lefty is dr. perry class of the jay carter journalism institute. perry, good to have you. i was using my left hand in the shot because i m a lefty. you wrote this fascinating article in the new york times about this. it comes off as an anomaly. why is that after all these years? why don t we have better sigh > the genetics or the development of why some people are left-handed or, to put it another way, how other people are right-handed. it s more complicated developmentally than i even majdz when i began writing this. statistically 90% are right-handed. only 10% are left-handed. as i said, i m left-handed. i can tell. for years left-handed people have been stigmatized as pathological, rebellious or