On 8/2/2011 11:06 AM, Stephen P. King wrote:

Hi,## Advertising

There is a difference between intractability and non-computable.See Stephen Wolfram's article on this:http://www.stephenwolfram.com/publications/articles/physics/85-undecidability/2/text.htmlThe point is that there is a point where the best possible modelor computational simulation of a system is the system itself. The factthat it is impossible to create a model of a weather system that canpredict *all* of its future behavior does not equal to a proof thatone cannot create an approximately accurate model of a weathersystem. One has to trade off accuracy for feasibility. Arbitrarilyaccurate models of systems require a quantity of computationalresources to run that increases exponentially with the number ofvariables of the system.

`But only up to the point where the number is the same as the number in`

`the system being modeled.`

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