[cody]

But the fact that the speed matching feature isn't elaborated upon does lend this riddle it's appeal. The fact that the term, "speed" is not defined is the key to this riddle. If the wording of the riddle went into details about what type of wheel "speed" we're talking about here, most would note that is where the key to the riddle lies.

But I'm not sure that you and I agree about the outcome if the terms are defined the way I think they are. You're still thinking in terms of realistic constraints.

I mean if the wheels can't slip and we're talking about the speed of the outside of the tires and the speed of an infinnitely precise conveyor belt, would you still maintain that a normal plane would take off without violating the speed constraints given (RE: speed of wheels is equal to speed of conveyor)?