Right-Handedness (addendum to "I need a doctor for this one")

Most of the population lives in the Northern Hemisphere. That's why the world is ethno-centric in saying that the North Pole is upright (when it could very easily as well but reverse - duality of universe)

So, when 1 pop meets a smaller one (90% right-handers).

But WHY Right-Handed for Northern Hemisphere?

Sun rays come from south. There's a disadvantage of hunting or facing an opponent against the sun so northerners need to be able to throw farther a rock or spear. So, by Coriolis effect (prevailing winds), if you throw right, the spinning of earth is on your side.


Related:

• A chimp throws at 20mph, humans at 60mph.

http://www.latinospost.com/articles/22353/20130627/humans-sport-unique-throw-evolved-2-million-years-ago-video.htm

• Chimps are 66% right-handed compared to humans: 90%

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2043156/