If you ever get really dressed up for a party, you get a feeling from the reactions of people that you don't need to be that loud. It's the same when you act. You have to always consider what's around you and the texture of things and try to meld in with what's going on.
We cannot see outside what we are not inside. The universe is to us what the huge engine is to the miniature engine; and indication of any error in the tiny engine leads us to imagine trouble in the huge one.