Perspective. It's all about perspective. Perception is reality. Never forget that. Not to say that everyone's perception is an accurate reflection of true reality. But it is of their own.
It's also true to say that you live in your own walled off and heavily fortified world. Nothing gets through unless it passes the rigorous inspection of your beliefs, and conforms. Beliefs oftentimes mistaken as facts. That applies to not only you, oldschooler, but everyone. So don't feel as if I'm singling you out.