RE: MythBusters Airplane Takeoff Myth
As soon as the rollerskater begins to pull himself forward the wheels of his skates can no longer roll at the belts' rate of feed.
The skaters wheels must roll faster than the belts' rate of feed. Think friction.
The wheels will need to churn, grind, chew.....etc., to advance on the belt. This is not in keeping with the concept, no grinding allowed.
The ideal belt system senses the advance of the rollerskater and puts him back in his place.
So far no re-enactors of this concept have been able to duplicate the infinite belt drive with infinite traction.