Re: A Geometrical Proof of the Non-invariance of the Spacetime In terval

["RAUBER, JOEL" <JOEL_RAUBER@SDSTATE.EDU>]

> > In what city do the two people F and F' say breakfast
> occured in?  According
> > to SR (special relativity) in your opinion?
>
> F says that breakfast occurred in Los Angeles. F', in order to get a
> distance of zero between breakfast and lunch (which is what
> SR gives for
> this case), must say that breakfast and lunch both occurred
> at the same
> place. But he must necessarily determine that zero distance
> at the time
> of lunch, when he is in San Diego. So he says that, since
> there is zero
> distance between breakfast and lunch, and lunch occurred in San Diego,
> breakfast must have occurred in San Diego (assume that he had a
> blindfold on until he arrived at lunch and was driven by a chauffeur).

Let me pose a slightly different question.  Its 10am according to F' several
hours after breakfast and several hours before lunch according to F'

In what city does F' say his breakfast occured?