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We do not know how many people were actually tested in this way. This might be the 25 out of 2000 which were the most disturbed. The other 1975 people might have gracefully handled the situation. I don't believe that but we just don't know.
You take 2 pieces of paper. Mark one as A and mark the second as B. Without looking at them you randomly put each into an envelope and send one to a remote location. You both open them at the same time and know that the other person has the opposite paper. The remote envelope had to travel by normal means. It was not teleported anywhere. The travel time is how long it took for you to send the envelope to the remote location.
They really should rename this to quantum encoding or something along those lines.
That resolution is not really correct for Virtual i/o glasses from the 90's. I still have the setup in a box in my closet. The maximum input resolution is correctly 640x480. What you actually get displayed though is half of that per eye. It is most noticeable with text. The resolution is not good at all.