I’m trying to id a particular SF short story I read in some compilation a few years ago. The problem is that I have a very foggy rememberance of it. In fact, I only remember the basic premise (I think). It was something about how our perceived reality is the sum of all the possible alternate universes. That all the branches happen and exist out there, and that they get merged together and form “reality”. There was also some bit about how a given person never dies, since reality from their perspective only consists of the alternate universes where they are still alive. I thought it was a pretty neat concept and would like to re-read it, but can’t find it at all.
I know I’ve done a horrible job of explaining this, but does anyone have a clue what I’m talking about?