Neb, this is sad you are an addict and need to get clean. i mean seriously two more posts where you say the same stupid argument that helps nothing.
Now heres a point i think has not been said very clearly so ill throw it out there.
To the guy who said his thoughts were that the treadmill matches the speed of the planes wheels, well how is that possible? lets think about it, the treadmill can only ever come extremely close to that of the planes wheels because the wheels will always be spinning with the force of the treadmill, and the force of the plane. so as one professor said that if you have an infinately accelerating treadmill you can come very close to matching the speed of the planes wheels. But some nerd re did the riddle and probally creamed himself at the same time on that nerdy website, and thats why this professor was confused. now the only way that the speed of the treadmill can ever match the speed of the planes wheels is if the planes engines are off. and its clear that if the planes engines are off it wont fly :-P thats silly.
its also not what the riddle states, it states that the plane turns its engines on. so in real life is it possible to make a giant treadmill the size of a runway and have that treadmill match the speed of the planes body and see what happens. well it actually is, it will never happen but at least its possible and in that case the plane will fly. in real life is it possible to build an infinately accelorating treadmill that has speeds up to .... err infinitey. the answer is no, its a stupid interpretation of the riddle and breaks laws of physics, where as the latter is a viable riddle and the answer is the plane takes off.
<3