[yefragetuwrabrumuy]

Nobody has shown any ability to violate causality to date. That is, nobody has demonstrated any “effect” that happens before a “cause”.

Importantly, this matters with FTL anything. Say one half of an entangled pair was a considerable distance away, say 10 light seconds, from the other half. As of yet, there is no indication that “information” can be passed between the two faster than in 10 seconds. This doesn’t say that it can’t, just that nobody has been able to demonstrate it yet.

[grey_whiskers]

I've always wondered whether the problem is that the physical separation of the entagled moieties does not *really* allow for each of them to be described by its own wavefunction.

Of *course* my math skills are too rusty to investigate this on my own. What do I look like, competent? :-)

Cheers!

[BlueDragon]

This doesn’t say that it can’t, just that nobody has been able to demonstrate it yet.

So you are saying that so far, the reaction has not been measured? No faster than the speed of light? At the speed of light?

Not measureable, as of yet, either way, just "quick", like instantaneous, or --- nearly so ...?

Just what is that you are saying?

[dr_lew]

Nobody has shown any ability to violate causality to date.

Quantum theory does not predict causality violation. The apparent violation of causality is a result of trying to model the quantum events classically, which is a purely rhetorical exercise, and bound to increase confusion.

[postoak]

Kant’s theory was that space and time are just “the forms of understanding”. IOWs these are the way WE understand reality. The real world could very well not abide by “our” rules of space and time. When looked at this way, quantum mechanics don’t appear so mysterious.