Quote:
Originally Posted by rkomar
It's been over 25 years since I looked into this stuff, so I'm pretty rusty on it. I don't recall the double-slit experiment having anything to do with consciousness. I remember that it was proof of the quantum theoretical view of the world as opposed to the classical view. It demonstrated wave-particle duality, and that interference and probabilities were correctly computed based on wave function amplitudes (one of the postulates of quantum theory). I don't remember wave function collapse being important to the experiment.
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The double-slit does indeed show the things you say, but in addition to that it does show the effect of the observer on wave function collapse - if the experimenter adds a detector to determine which slit a given particle goes through, the interference pattern disappears (indicating, per the Copenhagen interpretation, wave function collapse).
/JB