Re: Changing the past by forgetting

2009-03-15 Thread Saibal Mitra
Thanks! This is like undoing historical events. If you forget about the fact that dinosaurs ever lived on Earth and there is an alternative history that led to your existence in the multiverse, and you do the memory erasure also in sectors were dinosaurs never lived, you have some nonzero

Re: Changing the past by forgetting

2009-03-15 Thread Saibal Mitra
If we consider measuring the spin of a particle, you could also say that the two possible outcomes just exist and thatthere are two possible future versions of me. There is no meaningful way to associate myself with either of the two outcomes. But then, precisely this implies that after a

Re: Changing the past by forgetting

2009-03-15 Thread Brent Meeker
Saibal Mitra wrote: If we consider measuring the spin of a particle, you could also say that the two possible outcomes just exist and thatthere are two possible future versions of me. There is no meaningful way to associate myself with either of the two outcomes. But then, precisely this

Re: [Fwd: NDPR David Shoemaker, Personal Identity and Ethics: A Brief Introduction]

2009-03-15 Thread Bruno Marchal
Hi G√ľnther, Hi Bruno, thanks for your interesting answer, I have some questions though. course, as I said, this will depend of what you mean by you. In case you accept the idea of surviving with amnesia, you can even get to a state where you know you are immortal, because your

Re: Changing the past by forgetting

2009-03-15 Thread A. Wolf
Thanks! This is like undoing historical events. If you forget about the fact that dinosaurs ever lived on Earth and there is an alternative history that led to your existence in the multiverse, and you do the memory erasure also in sectors were dinosaurs never lived, you have some

Re: Changing the past by forgetting

2009-03-15 Thread A. Wolf
what nonzero probability implies, you'd have a hard time showing that anything non-contradictory at all has a nonzero probability of being true. Er, I typed too quickly. I mean you'd have a hard time of showing that anything non-contradictory has zero probability. Anything that isn't

Re: Changing the past by forgetting

2009-03-15 Thread George Levy
I agree with Anna. In addition, it all depends on where you define the boundary of the self. Just the brain? Brain + body? Brain + body + immediate surrounding (prescription glasses being worn, automobile being driven, binoculars or computer being used) ? Brain + body + Whole causally

Re: Changing the past by forgetting

2009-03-15 Thread George Levy
I agree with Anna. In addition, it all depends on where you define the boundary of the self. Just the brain? Brain + body? Brain + body + immediate surrounding (prescription glasses being worn, automobile being driven, binoculars or computer being used) ? Brain + body + Whole causally

Re: Changing the past by forgetting

2009-03-15 Thread russell standish
On Sun, Mar 15, 2009 at 11:06:42AM -0700, Brent Meeker wrote: Saibal Mitra wrote: If we consider measuring the spin of a particle, you could also say that the two possible outcomes just exist and thatthere are two possible future versions of me. There is no meaningful way to associate

Re: Changing the past by forgetting

2009-03-15 Thread Brent Meeker
russell standish wrote: On Sun, Mar 15, 2009 at 11:06:42AM -0700, Brent Meeker wrote: Saibal Mitra wrote: If we consider measuring the spin of a particle, you could also say that the two possible outcomes just exist and thatthere are two possible future versions of me. There is no meaningful

Re: Changing the past by forgetting

2009-03-15 Thread Stephen Paul King
Hi Brent, But does not MWI imply that if we could somehow erase all (retrivable!) records of a measurement, that we would - in effect - be culling that branch from the Tree? - Original Message - From: Brent Meeker meeke...@dslextreme.com To: everything-l...@googlegroups.com

Re: Changing the past by forgetting

2009-03-15 Thread russell standish
On Sun, Mar 15, 2009 at 07:06:06PM -0700, Brent Meeker wrote: No need to do it. Even more telling experiments have already been done in which the measurement was just the unrecorded IR radiation from buckyballs. Buckyballs which were sufficiently cold showed the 2-slit interference

Re: Changing the past by forgetting

2009-03-15 Thread Brent Meeker
In quantum eraser experiments the erasure is done by making the measured value ambiguous, e.g. by making a different measurement which does not commute with the one to be erased. In terms of MWI this has the effect or recohering (or more accurately, not decohering) the branches rather than