Matt Mahoney wrote:
As you probably know, Hutter proved that the optimal behavior of a
goal seeking agent in an unknown environment (modeled as a pair of
interacting Turing machines, with the enviroment sending an
additional reward signal to the agent that the agent seeks to
maximize) is for the agent to guess at each step that the environment
is modeled by the shortest program consistent with the observed
interaction so far. The proof requires the assumption that the
environment be computable. Essentially, the proof says that Occam's
Razor is the best general strategy for problem solving. The fact
that this works in practice strongly suggests that the universe is
indeed a simulation.
It suggests nothing of the sort.
Hutter's theory is a mathematical fantasy with no relationship to the
real world.
Richard Loosemore.
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