Mueen Nawaz wrote:
> 1) Do you actually believe the time travel theory?

I believe that QED is time-invariant, such that there's nothing in the 
math that can explain why time goes one way and not the other direction. 
I.e., an electron going forward in time is precisely a positron going 
backward in time. To call such "absurd" or "a creator of paradoxes" is 
inaccurate.

I.e., you can't measure that something has gone back in time, but you 
can't measure that something has gone forward in time either.

> 2) My view, as stated earlier, is that we have a formalism that 
> accurately describes the results, but does not address (or care about) 
> questions such as whether particles traveling through time or go through 
> two slits.

I've seen lots of descriptions of experiments ruling out "going thru two 
slits at once".  The formalism, as I understand it, is that it goes thru 
one slit or the other, but if you look at which slit it goes through, 
you are now doing a different experiment so you get different results. 
And that this is explained without any reference to "waves" or the 
particle being in multiple places at once. (*Possibly* being in multiple 
places at once, yes.)  Of course, if you don't look, maybe it *is* in 
multiple places at once, but then you didn't look, so asserting you have 
the right (or only) explanation is not scientific.

-- 
   Darren New / San Diego, CA, USA (PST)
     "That's pretty. Where's that?"
          "It's the Age of Channelwood."
     "We should go there on vacation some time."

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