On 19 Jan 2015, at 21:33, meekerdb wrote:
On 1/19/2015 9:23 AM, Bruno Marchal wrote:
Like 0 universe, 1 universe, 2 universe, ... aleph_0 universes,
aleph_1 universes, etc.
We need faith to believe in anything different from our own
consciousness here-and-now.
But our perception (part of our consciousness) provides evidence
for 1 universe.
?
No, only for a universe. Not one. On the contrary, the evidence is
that each big things we tought could be one, appears to be
multiple: one earth => many planets, one solar system => many
stars, one galaxy ==> many galaxies, one cluster of galaxies, many
cluster of galaxies, ... "One universe" is already a strong
metaphysical assumption.
I didn't assume one. I didn't make any assumption at all. I just
pointed out that we have direct evidence for one, and not for other
numbers.
We have evidence for A universe. Not for 1. usually we believe in 1
universe, because we tend to decide that everything (physical) is in
the universe. But then we say one *by definition*. But I do not know
any fact which can be taken as an evidence that there is only one
universe, nor even what that would mean, as I don't take the idea of
even one , or even 1, universe for granted. That is the type of God
which is incompatible with machine theology.
So it is not unevidenced faith to believe there is one. To be sure
all observation includes Descartean doubt, but that doesn't mean
it's not evidence.
Honestly, I am not sure what evidence you are thinking about, except a
sort of definition.
With computationalism, it will depend on the logics of S4Grz1, Z1* and
X1* to decide if there is three or less physical realms.
Bruno
Brent
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