You find sprinters testing other sprinters' mental capability. But these are my good friends on the track. I don't think we need to do that.
Hood films now are made by studios and have nothing to do with the reality they supposedly represent.
I think that by following the route that I have tried to outline, one gets into a much more interesting and productive series of questions than those that result from saying simply that Chinese don't like milk because they don't like milk.