Quote:
Originally posted by MattyX:
Quote:
Originally posted by Mobycat:
But we are not assuming a headwind. We are assuming calm air. If the plane overcomes the headwind/water (conveyor belt), then the puzzle is flawed - because that would mean the conveyor belt has NOT matched the speed of the wheels.
For this analogy:

Headwind=headwater

Calm wind= calm water

conveyor underfoot=conveyor overhead

headwind DOES NOT = conveyor[/QB]
Calm wind does NOT equal calm water.

Gas does NOT equal liquid.
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"Nature has constituted utility to man the standard and test of virtue. Men living in different countries, under different circumstances, different habits and regimens, may have different utilities; the same act, therefore, may be useful and consequently virtuous in one country which is injurious and vicious in another differently circumstanced" - Thomas Jefferson, moral relativist