A minor flaw: it is said in a way like it is 2 choices out of 4, which gives you 6 combinations. But it is more like two choices each for 2 independent “axes”,

A minor flaw: it is said in a way like it is 2 choices out of 4, which gives you 6 combinations. But it is more like two choices each for 2 independent “axes”, which gives you 4 combinations, exhausted in the elaboration that follows. (For example, someone who is both clever and stupid, and someone who is both hardworking and lazy don’t make sense.)