Yeah I did that experiment too, on a Saturday. it blows super hard. you can see the effects of People running up and down the stairs. if you stand within a mete

Yeah I did that experiment too, on a Saturday. it blows super hard. you can see the effects of People running up and down the stairs. if you stand within a meter too long at the right position, you can distort the gravitational force. If you bump the case too hard readjusting the balls, you blow it. It took something like 1 hour for a full cycle? You don't realize all of your mistakes until 4 hours later.