So, this guy (or group of people with one dude who has a Vimeo account) creates a program that allows people to trace a line, but each consecutive person only sees the line traced by the previous person, not the original line.
Then he makes a video showing the lines the people traced.
By the time it gets to about 46 seconds, I'm thinking people can screw up anything.
At 1 minute 16 seconds, I realize there is no hope for the human race. It's time we just leave quietly and let the cephalopods take a turn.