[tptacek]

Those links all demonstrate that you can make an educated guess about ethnicity from the sound of someone else speaking, but don't establish that you can use physiologically-determined elements of someone's voice as a cue to infer their race.

[Mz]

This is the original statement being dismissed that I am agreeing with:

But every human can easily identify black/white/Asian based on facial features or voice.

Put another way, you could describe that in your words: you can make an educated guess about ethnicity from the sound of someone else speaking.

I have already allowed that race is a nebulous social construct at best. I don't know what your point is. You stating that we can't yet prove beyond a shadow of a doubt that these differences are purely physiological in origin is not really a rebuttal.

There is no real way to readily separate something like voice from things like lifestyle and socioeconomic class. Similarly, on average, men are taller than women. We could argue about how much of that is actually genetic and whether or not there is some culturally determined stunting of women going on globally, but it doesn't change the measurable average height difference between the genders as a group.