Yeah...What one person considers deep understanding about something, might seem to another the most basic, superficial knowledge. It's all relative. It's like:

Yeah...What one person considers deep understanding about something, might seem to another the most basic, superficial knowledge. It's all relative. It's like: Beauty is as relative as light and dark. Thus, there exists no beautiful woman, none at all, because you are never certain that a still far more beautiful woman will not appear and completely shame the supposed beauty of the first. - Paul Klee, diary, 1910 (And yet, there is light, dark, and beautiful women..)