Quantum neural computer

[Mitsu Hadeishi]

>It is difficult to argue that quantum computation plays an important
>role in everyone's favorite intelligent computer, the human brain.
>The characteristically 'quantum' properties of quantum computers,
>such as the ability to run a superposition of programs simultaneously
>on a single machine, arise only if the computer is a totally isolated
>system; ie., it exchanges not a single quantum of energy with
>its environment.  The brain fails this test pathetically.

	This is not correct, as I understand it: a quantum
measurement does not necessarily collapse the entire wave
function of a system, and even if it did the mere fact of the
exchange of energy with another system does not in fact
entail a quantum measurement.  If this statement were correct,
then measuring *anything* coming out of *any* system would
allow you to determine the precise state of every single particle
in the emitting system.  Consider also the fact that a measurement
can be ambiguous between different wave functions: i.e., you
may detect a photon, but you don't necessarily know where
the photon came from.

Mitsu Hadeishi
General Partner, Open Mind
mitsu at well.sf.ca.us
mitsu at netcom.com