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I like to point to another instance of something similar happening with left handedness. See, there was a huge stigma around being left handed that was very religiously ingrained (sinister being a term for someone being left handed), and children were mostly taught to be right handed because of this. Like, forcably switching hands for writing and eating and other activities if they used "the wrong hand". But, when this stopped being so poorly thought of and stopped being forced on children, left handedness SPIKED! You know, until it reached population levels, which is somewhere around 1 in 9. And then it stayed there.

Because, like, obviously left handed people didn't just appear out of nowhere. They were always there. They were just being forced to be right handed. And it was causing a lot of unnecessary trauma to force them to be right handed.