--- In [EMAIL PROTECTED], Richard Baker <[EMAIL PROTECTED]> wrote:
>
>This is slightly misleading. Saying that a particle is "in a
>superposition of states" supposes a choice of an observable (I assume
>that we're only talking about observables whose eigenstates form a
>basis for the Hilbert space). With one choice of observable then the
>basis vectors in the Hilbert space might be such that the state of >the
system is aligned with one of them, but you might just as well >have picked
a non-commuting observable and then you'd find the state >was in a
superposition.

That's fair enough.  I did mention in the first paragraph the possibility
that the system remains in an eigenstate in the same direction.

I'm struggling to keep my stuff down to L3 (<15kbytes)  The etiquette
guidelines suggests this limit, so I'm not a precise as maybe I should be.
Thanks for helping to clarify this.
>
> As for all the philosophical stuff: I don't think I'm qualified to
> comment on that but I'm having fun reading it.
>

Well, I'm glad you are enjoying it.

> Rich
> GCU Is This Sci.Physics.Research?

No, John Baez would not have accepted these posts.  But it is a place for
good far reaching discussions.  We have people with different skill sets
here, and the overlap can be fun.  Our Robert Zimmerman, who did not have a
girl from my home town as his first girlfriend, knows a thing or two about
brains, so we've had fun discussions on QM, the brain and free will in the
past.

Dan M.

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