If I run on a treadmill at 4mph for one hour, I don't move relative to the room I'm in.

But I don't tell someone, "I ran zero miles today!"

I DID run 4 miles.
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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