Quote:
Originally posted by MattyX:

Imagine roller skating on a long treadmill that matches your speed exactly. There's a taut rope directly overhead within easy reach. As you move forward, the treadmill acts to keep you in the same place. If you grab the rope and start using it to push yourself forward, hand over hand, and your wheels are just touching the treadmill, will the treadmill be able to stop you from propelling yourself forward using the rope? No, because you're applying force to the rope and your wheels are reducing friction with the treadmill.
Ugh.

A rope is NOT fluid. The air IS.

The rope is tied to something. The air is NOT.
_________________________
"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