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Old 03-13-2016, 11:15 AM
John Mace John Mace is offline
Join Date: Dec 2002
Location: South Bay
Posts: 82,550
Originally Posted by Chronos View Post
Why have a dominant hand at all? Because it's more useful to have one hand that you're really good at than two hands that you're sort of good at, which you'd have if you practiced with both equally.

Why do most humans have the same dominant hand? At a guess, it's because we're tool-users, and it's advantageous for everyone to be able to use the same tools.
Chimps are also more commonly right handed. They also use and make tools, but they don't share tools, if that's what you are getting at.

Last edited by John Mace; 03-13-2016 at 11:15 AM.