There’s an episode of ‘3 body problem’ where they explain logic gates quite well. Put a million people with a flag into a square. They’ve each been told instructions like: if the person north of you has a flag, show your flag, or if the person to the left and south shows their, don’t show your flag. Then you tell the person at the bottom right, show your flag, and everyone follows suit depending on their instruction. That’s one clock cycle.
Then all the sand flows out of the bath … backwards. #hhgttg
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