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Date: Fri, 10 Aug 2012 18:18:55 +0200
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Subject: Re: [lojban] Direction of Rotation
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> W1 = x1 is rotating clockwise on axis x2 in reference frame x3.
> W2 = x1 is rotating counterclockwise on axis x2 in reference frame x3.

Let's admit that, but the meanings of W1 and W2 are cultural.

How do I know something turns clockwise --- that is, how do I explain
it to some distant alien ???

If I say that the rotation vector is some Z which is (X x Y), then I
must explain how to carry the vectorial product in such a way that I
notify that the Z direction is the one of my middle finger when my
thumb plays X's role, and my second finger Y' role, with my right
hand, for instance...

Which is totally untractable for a alien living in Andromeda, or in a
mirror-reversed world.

Thus, this explanation is CULTURALLY biased.

Another explanation invoking the rotation direction of an ORDINARY
clock, or of the Sun in MY hemisphery,... would be of course cultural
too...

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