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Comment: Re:I don't get it (Score 2) 112 112

The point is that if you measure whether or not the photon went through slit 1, you "force it to take a stand", and choose which slit to go through. Thus, the wave function collapses and you no longer get the interference pattern, but just two blops of photons on the back wall.

Comment: Re:Success? In going up sure... (Score 4, Insightful) 39 39

I don't think you know what "exceeding the goal" means. This wasn't expected to be a perfect, smooth flight with a soft landing - it was the very first flight of an incomplete version of an all new design, and the succes criterium was simply "getting liftoff". And by that standard, it was a huge success!

"This is lemma 1.1. We start a new chapter so the numbers all go back to one." -- Prof. Seager, C&O 351