Quote:
In this case...I have a plane on a tread mill....it takes off.

I am arguing with those who do NOT have a plane on a tread mill...who are telling me it WON'T take off.

Surely, this can be understood as frustrating at least?

laugh [/QB]
A plane on a treadmill won't take off - unless it's a VTOL or the treadmill itself is moving along the ground at a speed that provides the lift that the wings of the plane need to allow it to leave the ground.