plauging thoughts

i wonder if some people really are as oblivious as they seem or if its kinda one of those things where they're fully aware of what they're doing and they just choose to pretend to be clueless. i mean i know i'm kinda guilty of it sometimes. people think im really clueless about a certain topic but in all reality i jus chose to kinda blow it off and pretend i dont know whats goin on with it to avoid the uncomfortable topic.. but the thing is i dont ever do it in a way that hurts anyone else. and idk maybe some people just are genuinely clueless as to what they're doing sometimes. and then you really cant blame them especially if you dont say anything about it.. but then again sometimes its just like theres a big neon, flashing sign pointing to exactly what is wrong with this or that picture and yet people act like they dont see it and im just truly curious.. how do they manage to not see it??