Brent Meeker writes:> > Perhaps even in a minimally conscious state your 
experiences are > > specific enough to distinguish them from those of everyone 
else in a > > superficially similar state. But what if, through amazing 
coincidence, > > you had a 5 second period of consciousness which exactly 
matched that of > > a stranger on the other side of the world? During that 
period it would > > be impossible to say (from a 1st person perspective) where 
you were > > being run or which person you were, in the same way as it would be 
> > impossible to say where you were being run if your consciousness were > > 
implemented on two computers running in perfect lockstep.> > > > Stathis 
Papaioannou> > Which is to say there is no "you", or at least you are not your 
consciousness.> > This raises the question again of "what is the minimum 
duration of a conscious state"?  You mention 5sec as being a long time for a 
coincidental match (would there still be two consciousnesses for that 5sec - I 
think not), but what about 300msec, or 100msec.  There's not much consciousness 
in 100msec; so little that it may be occuring hundreds of times over in 
different brains.> > Brent MeekerI think the minimum duration of a conscious 
experience is of the order of 100 msec, so if you are shown a red flash it will 
take at least this long before you perceive a red flash. This implies a minimum 
duration for an observer moment, although the interval can be divided up 
arbitrarily (for example, in teleportation thought experiments) leaving the 
experience intact. However, this raises a difficulty. Suppose you are shown a 
red flash and 99 msec later you are teleported to a distant place. Once you 
materialise, your neurons will continue their processing of the red flash for 
another 1 msec and at that point (i.e. 100 msec after being shown the flash) 
you will perceive it. Next, suppose that you have no past but are created at 
the teleportation receiving station from information *as if* you had been shown 
a red flash 99 msec ago. Your newly-created brain will process information for 
another 1 msec and then you should perceive the red flash. However, in this 
case you have only been alive for 1 msec, and we can easily change the 
experiment to make this interval as short as we want. Does this mean that an 
observer moment can actually be instantaneous?Stathis Papaioannou
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