  Proponents of the Everett interpretation of Quantum Theory have made efforts
to show that to an observer in a branch, everything happens as if the
projection postulate were true without postulating it. In this paper, we will
indicate that it is only possible to deduce this rule if one introduces another
postulate that is logically equivalent to introducing the projection postulate
as an extra assumption. We do this by examining the consequences of changing
the projection postulate into an alternative one, while keeping the unitary
part of quantum theory, and indicate that this is a consistent (although
strange) physical theory.
