[net.philosophy] Turing machines and the mind

williams@kirk.DEC (John Williams 223-3402) (10/28/85)

There is one critical point that is being missed here.

	A turing machine is a discrete model of intelligence. It should
not be confused with intelligence. Any " real " machine would be operated
in a continuous, or at least closely approximated continuous, reality.

	Could you build an intelligent machine? Yes.

	Could you accurately model intelligence using the turing model? No.

	As a discrete model, it neglects some of the continuous phenomenon
that cause present computers to fail. It is precisely these uncertainties
which are utilized in the structure of the brain to provide the 
phenomenon known as free will. We will be unable to duplicate intelligence
using existing architecture. All current methods for indeterminancy, namely
random number generators, repeat. The biggest problem is that a truly
random process is unbounded, and that turing machines are bounded. It is
hoped that the reader understands the difference between unbounded and
infinite. The brain is finite, yet it's processes are unbounded. Current
synchronous architecture is unable to duplicate this.

						John.