Time travel (209)

148 Name: Anonymous Scientist : 2008-02-17 01:16 ID:o2Omsbkr

>>146
You bring up the classic point of linking time and entropy. Thats fine with me, except for two things:

We use entropy to the issue because it's one of the rare physical laws which is not symmetric, and could thus explain the perceived irreversibility of time.

However you don't know for instance which one is the consequence of the other, or if they are both the consequence of a third unknown factor, or if they have nothing to do, but are both instances of irreversible effects.

Also, if bidirectional time travel exists, then it would increase entropy in the past, which in turn would increase entropy in the future. If so, there would be no obvious break in the second thermodynamic law when you time travel.

Finally, and as you hint, you must take into account the whole system, when you assay the increase in entropy, and thus local time jumps would be possible at the expence of entropy increase somewhere else in the system. Basically, we don't know the link between irreversibility of time and entropy, so it's a bit difficult to explain one with the other. But it's a good starting point for speculation,...

This thread has been closed. You cannot post in this thread any longer.