People who get into PhD programs should have the general intelligence to realize that every PhD candidate can not become a professor. It doesn't add up in any hierarchical organization like that.
If you understood how people actually think, in a cognitive-science sense, you would understand why "X should have the general intelligence to realize Y" is a complete load in almost all cases.
I'm sorry. Clearly some of the self-appointed smart people of HN were offended by my naive remark, uninformed by any research in cognitive science or other relevant discipline.
