Hi Saibal,

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Hi Bruno,Patric has already explained Barbour's position (I didn't read hisbook).Separating space from time is not very natural...

`I agree. If only because of special relativity. But the very notion of`

`space is quite complex. It is a reason why I find "loop gravity" more`

`convincing than "string theory". In loop gravity a natural "quantum`

`theory of space-time" is given. In string theory, it looks like we`

`still need a classical space-time background.`

`(With comp there is an appearance of purely subjective (1-person) time`

`with S4Grz, but space doesn't yet appear, although Goldblatt gives a`

`modal analysis of Minkowski space-time which provides some hope it can`

`be done.`

`It is also possible that space is eventually generated by "a sort of`

`abstract theory of knots" which could emerge from the computations`

`statistics. This is not in my thesis and I'm speculating a little bit.`

Perhaps one can use a similar method as presented here: http://arxiv.org/abs/math-ph/0008018 to derive the notion of space-time as a first person phenomena.

Thanks for the reference.

`I will take a look on it (when I will be less buzy: those who asked me`

`a paper are so glad with it that they ask me to rewrite the second part`

`making it less technical for a wider audience, but that's work, and new`

`deadline .... :()`

Bruno

http://iridia.ulb.ac.be/~marchal/