It’s possible you are right, but your reasoning here is fallacious. You are begging the question – using the point you are trying to prove as evidence that you are right.
The poll numbers not matching up with prevalence in the population could have multiple explanations, including a combination of them.
Theoretically, it could be that there are more nonleft-handers on the dope, or just more of them in this poll because they are more interested in it, or a combination of those. You cannot tell the cause by looking at the numbers alone.
Fairly strongly left-handed - I cannot even block print with any degree of success with my right. But oddly enough at the dawn of my own personal pc era, which was in my twenties, I trained myself to use a right-handed mouse and have never deviated from that. Similarly with can-openers and the like - there was no Leftorium when I was growing up.
Am I particularly creative? Not particularly. Artistic? God, no - can’t carry a tune a millimeter, play an instrument or draw anything more complicated than a stick man (not even a good stick man at that - I can only aspire to XKCD’s heights). Crafty? I got a D in 8th grade wood shop and it was kind of a generous D at that. Unusually intelligent? Hell no. I’m usually intelligent . Which is to say I think I’m reasonably bright as these things go, but I’ve met a number of genuinely brilliant people in my life and am very, very aware that I’m nowhere close to those folks.
Maybe left-handedness is vaguely correlated with some traits, but if so I’m definitely an outlier. I’m staggeringly average in many respects, very modestly capable in a few and utter shit at a shockingly long and ever-growing list of things.
@DrDeth I would need a good argument for why your self-selection hypothesis is more likely than the more lefties hypothesis. They aren’t nearly as different in probability as encountering a horse vs. a zebra. It’s possible that the SDMB is more like living in some part of Africa where zebras are more common.
I would argue that the 174 voters suggests higher participation than usual, which should reduce the self-selection effect. The higher the percentage of the SDMB who responded, the closer we should get to the actual average.