Reality

Let's not talk about reality like it exists. It doesn't in any objective sense. You have yours. I have mine. Every one of the 7 billion of us on the planet has theirs. You see that in any extended conversation.

Reality is a function of the brain. It's the organ. It's the filter. It's the organizer, the creator, the namer, imaginer. And each brain is different. If the brain is doing its job, reality is always in flux.

This is not so comforting a thought, but it surely makes life interesting.