Quote Originally Posted by speedminded
What prevents the plane from moving forward? Think about it!


Here's another analogy, on a skateboard and approaching a normal everyday treadmill that is on, you're rolling towards its then lean back shifting your weight behind the rear wheels lifting the front of the skateboard just before coming in contact with the treadmill....now the rear wheels are on the ground and the front two are on the treadmill. Are you going to fly backwards or just sit there spinning the front wheels?
You will be spinning the front wheels and sitting on your ass. But what does this have to do with anything?? Your weight is still shifted to solid, non-moving ground. Sit your entire fat ass on all four wheels on a moving treadmill and you WILL fly backwards with skateboard and all.