probability world n.

He lived in this probability world of his own until his death in 2874.

She had the ability to project herself to other probability worlds.

You and I may be no more than puppets in some probability world that will pinch out tomorrow.

He had suspected that the probability world his apparatus could most easily adjust him for would be one in which Germany had lost the war.

I’d say this probability world, if that is what it is, is several degrees from ours. Even the names of the places we’ve been given are entirely foreign.

This started off as a story by Jack called ‘The Alpha Tree’™, about a boy who could see into alternate universes…. I skewed Jack’s idea somewhat, building the story instead around a concept that had long fascinated me—an intuition of how easy it would be to become lost among the billions of probability-worlds that are born and die around us every second of every day.

[T]hese semi-scanners worked on broken frequencies, on quantum probability pocket worlds not seen or even remembered by any but the oldest of antiquarians. Like those tripod machines. This, the observer felt, could not go on. There were rules or, if not exactly rules, there was such a thing as decorum. Which meant those probability world incursions had to stop. The observer felt quite cheerful now. Soon it would be all over and he’d be back where he belonged.