Small changes in the median have big effects when you're looking far enough out along the tail. That's at least part of why professional basketball is so black

Small changes in the median have big effects when you're looking far enough out along the tail. That's at least part of why professional basketball is so black--there is a tiny difference in average height between white and black, small enough that on average you won't notice it at all. At the very end of the tail, though, it has a big effect.