Tom Caylor writes:
It seems to me that as soon as we talk about measure, it is equivalent to
talking about one (physical!) universe. This is similar to your George
Levy's taking the ratio of the lengths of two line segments. You don't
need a multiverse to do that. I think that talking of measure in the
multiverse is taking a common sense thing in a single universe and
(erroneously) trying to make it make sense in the multiverse. I don't
think it works. So yes I'm ignoring something that doesn't work, in my
view. I brought up the problem of the additional 10^100 copies, but your
bringing up the word "measure" doesn't solve it. The reason why you don't
buy lottery tickets could just as easily be explained in a single universe.
Are you saying that probability can only mean anything in a single physical
universe? And that because apparently probability does have meaning, this is
evidence that there is only a single physical universe? Would you go further
and say that the universe must be finite, because many of the properties of
the multiverse are mirrored in a single infinite universe?
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