Causeless events

[TMiguel]

As usual I have no idea what TMiguel is talking about, but hidden variables are not necessary in order to interpret QM as causal. Like I said, the evolution of the wavefunction is completely deterministic, and in the interpretation that (probably) most physicists accept today that's all there is - there's no need to any extra "measurement" postulate.

I don't take sides on this matter. I’m just saying you should state something is causeless because we fail to find any cause, that and just that is my point here.

 

[sol invictus]

I don't take sides on this matter. I’m just saying you should state something is causeless because we fail to find any cause, that and just that is my point here.

Then you simply don't understand the discussion. The issue at hand is that there are mathematical proofs which show that no local hidden variable theory can explain the experimental data. It's not about failing to find a cause, it's about proving rigorously that there cannot be one.

My point is that those proofs - in fact the whole debate - is limited by a failure to consider a broader possibility, namely that all results are obtained simultaneously, in a deterministic evolution. Such a model really cannot be said to be acausal, although I will grant that it does not answer every question one might think it would be natural to ask (e.g. "why did I just measure spin up rather than spin down").