>However, there are STILL objective measurements possible. For
>instance,
>[given a system of units], the 'proper time' a particle [or person,
>objectively rather than subjectively] experiences is objective--it
>doesn't
>matter how badly your measurements are distorted by frame shifts
>[rotating
>frames, etc.], the proper time is invariant [up to quantum-mechanical
>uncertainity]. [If its square is negative, that means the events are
>space-like, and there is no sublight causal relation possible between
>them. Until we have decent theoretical/experimental evidence, I'm not
>going to consider 'no preferred space-time factorization for FTL
>phenomena' as obvious. For sublight and lightspeed phenomena, there
>is
>rather extreme support.]
>
>//////////////////////////////////////////////////////////////////////////
>/ Kenneth Boyd
>//////////////////////////////////////////////////////////////////////////
>
>