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			I was gone somewhere when this discussion was taking place.  Otherwise, I would've put my simplistic answer as such
 For every action there is an equal and opposite reaction.
 
 Since an airplane, by our typical definition of terms, is assuming the reaction is a stable ground, no, the plane will not take off on a conveyor belt.
 
 --> this person has never taken physics, but remembers stupid memory joggers.
 
 T'was a good discussion all over the place anyway.
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