Originally posted by Palynka
Maybe you can answer my question:
Is reaction possible without any new information? I always assumed action/reaction required force and therefore information. Is there a precise definition for what reaction means in physics?
To start things off let me just say that the comment that incited my first reply on this thread was the most half-baked attempt that I ever saw in trying to popularize entanglement and Bell's inequalities (later comments weren't exactly stellar either, mind you)
When you are in QM the concept of force makes no sense whatsoever and so this talk of action/reaction and forces makes no sense at all.
I'm assuming of course you and Mr. quantum physicist are using those terms in their everyday usage for any self-respecting physicist.
There is pretty good definitions to what reaction means in physics. You could be using it as in action-reaction pairs (in which case such usage is totally wrong in QM), or can you can be using as a synonym for feedback.
And I think that this usage might have some kind of marginal use to all of this...
Now the gist of entanglement, Bell's inequalities and all of this really comes down to QM ontology. The thing is that ontologically speaking orthodox QM rests on the shoulders of Fourier analysis. And any self-respecting physicist/mathematician (even quantum physicists I suspect and hope) knows that FA is non-local.
So a physical theory that rests on a nonlocal mathematical theory is nonlocal too. Having this in mind Bell's inequalities are hardly surprising and what really is the experimental confirmation of these results.
One excellent way for you to know a little bit about this is this excellent article: http://plato.stanford.edu/entries/qt-epr/
If you'd like a peek into the original article (something that any quantum physicist has surely peeked into) here you go: www.drchinese.com/David/EPR.pdf
If you have any question on the SEP article fire them away and I'll do my best, but just count me out of this action-reaction talk from now on.