Atheist Statist wrote:And translations don't change a vector.
That's an interesting question in itself - and it turns out that the whole field of Riemannian geometry (and therefore general relativity) is founded on the possibility that translation DOES change a vector.
I thought we were talking about the euclidian example of the strip, not one being accelerated or spun relativistically, or in high gradient gravitational fields. IOW, I was seeking a physical, not abstract, example.
Have you heard about the notion that our memories and imagination occur in a hyperbolic space, which is why we actually can picture infinity, and seem to have little limit to how much we can stuff into our kinesthetic and conceptual maps (we have limits on the amount of information, but not on the represented size and shape of the internal maps we use to coordinate it all.)
-Tom


