I don't want to mince words here. There are people around you who cannot think at your level. And may be you are that person to someone else too. This does not include cases when we can say "So what? They have their own things they are good at." No, these people are genuinely atleast a level below you intellectually. It is quite common in my circles due to very understandable reasons. It could be parents, partners, siblings etc. So how do you deal with them when discussing issues which need deep thinking?