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Phoenix666 [soylentnews.org] writes:

An aura of glamorous mystery attaches to the concept of quantum entanglement [quantamagazine.org], and also to the (somehow) related claim that quantum theory requires “many worlds.” Yet in the end those are, or should be, scientific ideas, with down-to-earth meanings and concrete implications. Here I’d like to explain the concepts of entanglement and many worlds as simply and clearly as I know how.

I.

Entanglement is often regarded as a uniquely quantum-mechanical phenomenon, but it is not. In fact, it is enlightening, though somewhat unconventional, to consider a simple non-quantum (or “classical”) version of entanglement first. This enables us to pry the subtlety of entanglement itself apart from the general oddity of quantum theory.

A decent primer on entanglement. Increasingly relevant at the dawn of the age of quantum computing.

Original Submission