"Thomas Heger" wrote in message
...


Yeup .. that's what SR says as well

It sounds like you agree with SR then .. which was my point

Of cause I do. The point is, SR leads you to convert one observation into
the other.

Physics is not terribly interesting if everything is at rest wrt everything
else

It's easy to get lost in the relationships. It's only more convenient to
think of selfcentered objects, but you are not restricted to do so. SR is
more like a triangle: one observer, one object moving, one reference
frame. It is easier to center the observer in the reference frame.

That is what one does in many of the thought experiments .. of course, SR
isn't limited to just that sort of case. And, of course, the crackpots and
nutters try to find various weird combinations of frames and observers in
order to get something they thiink will make hte whole thing unravel.

This is more ART like. If you think about curved spacetime, you think more
about time than about space. Space is what you get, when you define space
as part of spacetime happening at the same time.

Yeup