Move versus assign

We observe that our universe uses a reversible computation, yet our brains only appear to use irreversible computation. It seems important to ask why. Is it possible for SASs to live in a universe that is directly associated with an irreversible computation? If so then why are we special?

Re: Move versus assign

Dear David, Please explain the claim : "We observe that our universe uses a reversible computation". I do not see how this follows from the observation that, on every observable scale, there is a non-invertible (thermodynamic) arrow of time. I do not see how this is possible if your

Re: Move versus assign

On the quantum scale, the dynamics are reversible, to a very high level of accuracy. Irreversibility appears at macroscopic scales. In answer to the original question, I would conjecture that an evolutionary process is the only process capable of generating complexity. Since we need a certain

RE: Move versus assign

Russell said... In answer to the original question, I would conjecture that an evolutionary process is the only process capable of generating complexity. Since we need a certain amount of complexity to be conscious, it follows that the simplest universes are ensembles of possibilities, on

RE: Move versus assign

Hi Stephen, The thermodynamic arrow of time only seems to be related to the boundary conditions of the universe, rather than those laws of physics which we regard as independent from the boundary conditions. The success of being able to divide and conquer physics into bc laws / non bc laws is

Re: Move versus assign

No - I think in terms of ensembles of descriptions. Some of those descriptions describe observers observing the descriptions. It then becomes natural to ask what sort of description an observer might see, given the description must describe the observer. Turing machines don't have much to do with

Re: Why is there something rather than nothing?

A possible way of answering the question Why is there something rather than nothing? relies on the principle of causality also referred to by Peter Unger as the minimization of arbitrariness, also related to Archibald Wheeler's Laws Without Laws. (You can refer to Peter Unger's article