why do we act like we really know what goes on in the world when we don't?

Do you? I am thinking when did I last did it? It's been a long long time ago. I very seldom pretend to know something that I do not because I'm not a good actress. I hate it if I will get embarrassed because of pretending. When I don't know what's going around I kept quiet, you don't have to always announce that you do not know anything, sometimes I ask around what's going on. And when somebody ask me what's going around I blatantly say I do not know if I really do know. There's no need to pretend.

we believe that the world known to us is complete. but it is not so.Because people forget this fact or ignorance of it makes them act as if they know all