Originally Posted by mrsdidi:
“Dappy's IQ or indeed Luisa's is totally irrelevant, that is the sort of tactic used by children in arguments "I'm cleverer than you" In playground fights in the adult world if you have to resort to insulting someone's intelligence( however annoying they may be) then you have lost the argument”
If someone has a low IQ then they may be less capable of appreciating the subtleties of an argument or situation and a cleverer person may be bored of trying to make them understand the point. After a while you might be tempted to just tell them that they 'aren't getting it' because they are thick and walk away. It might be a bit rude and tactless but it's not unreasonable.