Re: relativity of simultaneity - real or perceived?

Dirk vdm wrote:
> I answered this question on that other thread.
> Replace u with c and you have your answer.
Why would the velocity of particle B have anything to do with its
position in Frame 2 relative to Frame 1 at a fixed moment?
To put it another way, if both particles are at each end of the box
simultaneously, then the distance between them at that moment equates
to the length of the box. I could just as well ask what the position of
the right-hand end of the box, i.e. length of the box is, as measured
to be in Frame 2. And there is no velocity between the ends of the box.
With all due respect and appreciation of your willingness to answer,
I'm continually confused and distracted by your responses.

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