This is why most people are right-handed

If you’re curious, a different example on drums is Ringo Starr. I swear I saw a video showing it at a drum kit, but I can’t seem to find it. Ringo leads with his left hand and plays a right-handed kit. So there’s often a distinctive rhythm. I think what makes Starr’s playing more unique is his understated style. So being left handed is only a minor part of it (but he always points to him being left handed in interviews I’ve heard).

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No, it’s just the same as using a left-handed guitar left-handedly, with slightly less optimal access at the top (highest) part of the fretboard.

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Sorry, didn’t catch the question. prooftheory is absolutely right but hypothetically it still might have contributed - by breaking the ice for experimenting and deviate from the usual, traditional way to play.

This science light article in fact didn’t even proximally let alone distally causally explain why humans are left handed.
The real reason? We are altricially ultra specialized creatures - with extreme hemicity or hemisphere specialization of our two cerebral hemispheres. One side has about 10% more white matter than the other side, (the left side in MOST but not all people). Some are flipped, some are more even. White matter is better for fast twitch spacial muscle coordination and brain circuits. Grey is better for association and specialization. Specialist win over generalists on evolutionary scales when the environment is stable. Thus we subsumed the generalist Neanderthals. The future will be “interesting”.

That seems like an odd narrative. I wouldn’t expect a lot known about how neanderthal brains might have differed from ours, and then the environmental instability that is the end of the last glaciation is thought to have contributed to a lot of extinctions, but our subspecies really did well for itself. In fact we figured out how to adapt to just about every habitat that supports mammals, which is not the usual meaning of “specialists”.

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Source?

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They did put forth a (probably unprovable) hypothesis that shortly after development of tool use, almost all humans were right handed, however in cases of conflict or combat, a lefty has a distinct advantage over someone who has no experience in dealing with southpaws. Hence a small number of lefties (about 10% or so) developed. Any more than that and the advantage evaporates, since it is now common enough to not come as a surprise. Or so goes the hypothesis.

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