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Re: cosmology and quantum gravity



5. is baseless and probably meaningless
Regards,
Jack

Adam was by constitution and proclivity a scientist; I was the same, and
we loved to call ourselves by that great name...Our first memorable
scientific discovery was the law that water and like fluids run downhill,
not up.
Mark Twain, <Extract from Eve's Autobiography>

On Wed, 26 Apr 2000, Zach Wolff wrote:

An interesting problem for any attempts at a theory of
quantum gravity popped into my head tonight:
1. Given black holes exist
2. By definition nothing from within the event horizon
ever escapes beyond the event horizon.
3. The gravitational effects of a black hole are
observable from beyond the event horizon.
4. The gravitational effects are mediated by
gravitons.
5. The gravitons that would mediate these effects must
originate within the event horizon.
6. For the effects to be observable outside the event
horizon the gravitons must travel beyond the event
horizon.
----
By contradiction one or more of the above postulates
is false. To me, 4 seems like the most likely
candidate.

Does anyone know of an attempt of a quantum theory of
gravity to overcome this inconsistency? If anyone can
explain this at an undregraduate level (I think I pick
concepts up pretty quick if you want to move to a
higher level by starting at an undergraduate level) I
would greatly appreciate it. If not, I'd still like
to hear the big guys on the list talk this one out
while I try to absorb what I can.

Zach Wolff

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