The GP seems to be thinking in the opposite direction. His analogy is that knowing an ORM but not SQL is like not knowing Prolog, and that adding knowledge of S

The GP seems to be thinking in the opposite direction. His analogy is that knowing an ORM but not SQL is like not knowing Prolog, and that adding knowledge of SQL to your ORM knowledge is like learning Prolog. So the argument is that it is a similar eye-opening transition from ignorance to awareness.