Originally Posted By: kallog
I find it all quite uninteresting. The frame dragging isn't really relevant
Uninteresting? - sure, whatever lights your fire; but [frame dragging] 'not relevant'? - any distortion of spacetime is relevant to frames of reference.

Originally Posted By: kallog
Inertial frames of reference are just convenient for simplifying things like SR does.
Convenient, and actual - and I would hazard a guess that Bill's intention is to try to gain insight into what happens specifically in terms of frames of reference.

"Time is what prevents everything from happening at once" - John Wheeler