Science and Post-It notes power this Rube Goldberg machine

3M used 25,000 post its, 75 rolls of that blue painter tape, and a whole bunch of other stuff to make this wildly complicated Rube Goldberg machine that’s actually really fun to watch. Unlike other Rube Goldberg machines, it’s not totally obvious how it’ll progress from one level to the next, like a slow burn where… »8/19/15 6:27pm