On Sun, Jan 19, 2014 at 02:34:08PM -0800, meekerdb wrote:
> On 1/19/2014 1:17 PM, Russell Standish wrote:
> >>
> >If a rational agent can compute its utility to determine its next
> >course of action, then so can any observer with access to the same
> >environmental information.
> >
> >Its got nothing to do with the Halting problem.
> >
> No, it does because calculating all the consequences one's next
> action may be (and practically is) a non-halting problem.
> Brent

The predictions that matter occur over a finite duration - eg the time
duration of a turn, or the next day of trading on the stock exchange.

It doesn't matter if the rational agent goes into an infinite loop (ie
crashes using Bruno's terminology), or merely takes too long to make a
decision, one can predict that the agent will not be able to make a
timely decision based on computing the utility, and terminating the
calulation if does not return in sufficient time.



Prof Russell Standish                  Phone 0425 253119 (mobile)
Principal, High Performance Coders
Visiting Professor of Mathematics      hpco...@hpcoders.com.au
University of New South Wales          http://www.hpcoders.com.au

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