On 12/19/2012 11:34 AM, Roger Clough wrote:

If information is stored in quantum form, I can't see why the number of particles in the universe can be a limiting fsactor. Also there are ways of storing information holographically, so size gets a bit ambiguous.

Dear Roger,

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`You ask an interesting question, but there is no good theory to`

`answer it exactly, AFAIK. I used a function of the particle number as a`

`generic estimate of the quantity of bits involved, but we would have to`

`look at the available states with a field theory of a correct quantum`

`gravity theory, which we don't have yet. Since it appears from the`

`latest observational evidence from ultra-high energy gamma ray arrival`

`times that space-time is not granular, the number of possible`

`information in our physical universe is freaking huge. Penrose estimates`

`it to be 10^124.`

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