username2 comments on Invitation to comment on a draft on multiverse-wide cooperation via alternatives to causal decision theory (FDT/​UDT/​EDT/​...)

[username2]

And if pilot wave theory is correct and these other universes exist only in your head...?

[Caspar Oesterheld]

Then it doesn’t work unless you believe in some other theory that postulates the existence of a sufficiently large universe or multiverse, Everett is only one option.