Nature is well made You know why most, not all but most, good looking girls, are doomed to turn dumb? Because, they notice early on, that to obtain something, they just have to smile... And they're so beautiful, it works all the time so why would you change a winning formula? Why would you bother with a more painstaking, more subtle, approach when "brute force" just works all the time... https://youtu.be/dXa3Db7ukRM?t=159