AlephNeil

Abstract: A boring, long-winded account of some extremely basic ideas is given. The "Coin Universe" Imagine a universe split into subsystems A and B, where causal influences go from A to B but not vice versa. A is extremely simple - each day either a "heads event" or "tails event"...

As a newcomer to LessWrong, I quite often see references to 'UDT' or 'updateless decision theory'. The very name is like crack - I'm irresistably compelled to find out what the fuss is about. Wei Dai's post is certainly interesting, but it seemed to me (as a naive observer) that...