/sci/ - Science & Math

>>6314996
a hand?

I was on cracked.com earlier today, I noticed they talked about Sex Myths that were actually true, one was the digit ratio theory (the theory you can determine a person's sexuality by the length of said persons fingers). I began to wonder to myself, has this literally been supported by actual scientific means of research? I know that I got this from Cracked.com so I know better than to trust their word alone, so it there actual scientific research to prove this?

Why do we have five digits? We only really need three (two fingers and a thumb) to perform all the major functions of a hand, and while the third finger can be helpful and augment that, we don't even use our pinkies. Like, at all. So, why did evolution decide five digits?

Also, yes I know, typing uses all digits. Man made and designed that way. I'm talking in a broader, evolutionary sense.