3 ms·
> It does? What about genetic drift, random mutations, and artificial selection, where humans select based on qualities not necessarily conducive to survival?
by leftyted 6y ago
> It does? What about genetic drift, random mutations, and artificial selection, where humans select based on qualities not necessarily conducive to survival?
It seems unlikely to be due to these factors since there's a gradient from black to white as you move away from the equator.
- tchaffee 6y ago> It seems unlikely That's fairly far from any scientific method I would have confidence in.
- leftyted 6y agoYou could have responded to my post but instead you did this. Why? There are more than two skin tone phenotypes. It's a gradient that gets lighter as you move away from areas of higher UV radiation to areas of lower UV radiation.
- tchaffee 6y ago> You could have responded to my post but instead you did this. Why? I responded to the part of your post that was the most important to me: that discussions like this head towards more scientific rigor the longer they go on. > There are more than two skin tone phenotypes. It's a gradient that gets lighter as you move away from areas of higher UV radiation to areas of lower UV radiation. Sure. And I'm not much interested in what "seems likely" in terms of what caused that. Lots of things that seem likely turn out to be wrong when it comes to causation.
- leftyted 6y agoIf you want to look for scientific papers about the obvious correlation between melanin content and UV radiation then use google. You should read Hume. He didn't think that casuation had anything to do with reason, but rather was a habit of the mind. You're not going to find any causal smoking gun here and you're really just blithely dismissing ideas that don't fit whatever vague, unacknowledged biases you have.