We know so little about trans-universe physics that it's of very little use to speculate.
We understand it quite well. It's just Schroedinger's equation.
Does the Schrodinger equation tell us how to increase the relative probability of interacting with an almost completely orthogonal Everett Branch?
"Almost completely orthogonal" here bears qualifying: In classical thermodynamics, the concept of entropy is sometimes taught by appealing to the probability of all of the gas in a room happening to end up in a configuration where one half of the room is vacuum, and the other half of the room contains gas. After some calculation, we see that the probability of this happening ends up being (effectively...
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.