it was nearly an argument and then it just crashed and burned so quickly, and it was so clearly meant to be some kind of coup de grâce
reasoning about the actual mechanics, and thinking through their implications
okay so if a person grows up in the wrong environment, and so they reason about the actual mechanics, and think through the implications in a way that you don't like, it's bad
but when they do it and get an answer that you do like, it's good
the only difference between the two scenarios is your personal opinion on their conclusion