Why this trick should be IMPOSSIBLE ft. Rodney Mullen - Skateboarding Science

Watching this and hearing it described in a way that makes sense was fascinating. It was tantamount to, when I was a driller, trying to described tripping the rods out of a 600 foot hole as fast as you can because, when the core drill isn't drilling you aren't earning the footage bonus.
 I'm only 5'6"and my arm span wasn't long enough to reach the wrench holding the rods and reach the clutch at the same time. I had to sorta dance with the rig, a timber block and a kick to the clutch and I was in business. Longyear 38 was the rig I learned on.