Left handers seem to defy the evolutionary logic that if a trait is favourable, it will become persistent in the population. Being right handed clearly seems to be the most favourable trait because about 90% of the population is right handed, but left handed people haven't become extinct - why?
Jesere
In the 60's the teachers forced me to use my right hand. Left handed people are more creative just pay attention to how many people on TV shows are left handed.
?
cuz they do..........
Anonymous
They were cursed by God
Anonymous
It's only socially favourable. I'm not sure on the mechanisms behind preferential hands (and eyes, feet etc) but there isn't particularly an evolutionary advantage. Only artificial social advantages that have arisen because most people are right handed.
Anonymous
The key differences between left and right handed people is lefties are shorter and more prone to mental disorders (disadvantages)