[LoSboccacc]

> The apparatus would necessarily exist within the closed system.

does being in a multiverse influences our world in any way using current theories?

yes > we can eventually figure out and run an experiment no > then studying it is as productive as searching the Russel's teapot

this is how you set apart a theory from speculation, a falsification test. i.e. > http://arxiv.org/abs/1210.1847

[dietrichepp]

But the multiverse theory is in competition with other theories, some of which make the same predictions. If two or five or seventeen theories all make the same predictions, do you pick one? Which one? If you want to pick the simplest theory, what criteria do you use to figure out that one theory is simpler than another theory?