Quote:
Originally posted by MattyX:
The plane does not take off. It will be at the same point relative to the air surrounding it, and thereby have attained a net of zero airspeed.
DING DING DING!!!

That's the EXACT same scenario as the conveyor belt!
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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