Naïve Classical World View - RIP?

[AiA in Atlanta]

A real-world demonstration of a thought experiment conducted at the University of Vienna, has produced a result that is somewhat befuddling to people with what the lead researcher calls a "naïve classical world view." Two pairs of particles are either quantum-entangled or not. One person makes the decision as to whether to entangle them or not, and another pair of people measure the particles to see whether they're entangled or not.
The head-scratcher is: the measurement is made before the decision is made, and it is accurate. "Classical correlations can be decided after they are measured," says Xiao-song Ma, the writer of the study. Entanglement can be created "after the entangled particles have been measured and may no longer exist."
The finding can be integrated into potential quantum computers, one hopes. Causality, clearly, is a quaint, irrelevant concept.

http://www.popsci.com/science/article/2 ... pens-cause" onclick="window.open(this.href);return false;

[mantra]

Thought experiment? I assume it will serve its purpose eventually, but the mind becomes entangled just thinking about it.

[T.G. of IK]

A real-world demonstration of a thought experiment conducted at the University of Vienna, has produced a result that is somewhat befuddling to people with what the lead researcher calls a "naïve classical world view." Two pairs of particles are either quantum-entangled or not. One person makes the decision as to whether to entangle them or not, and another pair of people measure the particles to see whether they're entangled or not.
The head-scratcher is: the measurement is made before the decision is made, and it is accurate. "Classical correlations can be decided after they are measured," says Xiao-song Ma, the writer of the study. Entanglement can be created "after the entangled particles have been measured and may no longer exist."
The finding can be integrated into potential quantum computers, one hopes. Causality, clearly, is a quaint, irrelevant concept.

http://www.popsci.com/science/article/2 ... pens-cause" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;

Jeeeeeezus "The head-scratcher is......" The whole fucken concept is a head scratcher. Here I was thinking my job was gonna do my head in....or is it.....has it already....maybe I have no head to do in.......insert Ned Flanders girly scream!

[Mattus]

The probability of the particles being entangled is the same as the probability of them being polarized before they are entangled. Therefore there is correlation between polarization and subsequent entanglement of particles. However, the relationship is not causal.

The popsci.com article is misleading I think, by using the terms "cause" and "effect" in the title. Notice that these are not used by the original nature paper, which instead discusses probability and correlation.

[freediver]

It was a thought experiment that lead Einstein to come up with the theory of relativity.