Stathis Papaioannou wrote:
> 2009/3/6 Jack Mallah <> wrote:
>>> If you're not worried about the fair trade, then to be consistent you 
>>> shouldn't be worried about the unfair trade either. In the fair trade, one 
>>> version of you A disappears overnight, and a new version of you B is 
>>> created elsewhere in the morning. The unfair trade is the same, except that 
>>> there is an extra version of you A' which disappears overnight. Now why 
>>> should the *addition* of another version make you nervous when you wouldn't 
>>> have been nervous otherwise?
>> It's not the addition of the other copy that's the problem; it's the loss of 
>> it.  Losing people is bad.
> How would the addition then loss of the extra copy be bad for the
> original, or for that matter for the disappearing extra copy, given
> that neither copy has any greater claim to being resurrected in the
> morning as B?
>>> That Riker's measure increased is not the important thing here: it is that 
>>> the two Rikers differentiated. Killing one of them after they had 
>>> differentiated would be wrong, but killing one of them before they had 
>>> differentiated would be OK.
>> That would be equivalent to U = Sum_i Q_i in which no changes in the 
>> wavefunction matter at all, since M_i > 0 for all i no matter what.  I don't 
>> think you thought that one through.
> I don't agree with the way you calculate utility at all. If I got $5
> every time I pressed a button which decreased my absolute measure in
> the multiverse a millionfold I would happily press the button all day.

Which "I"?  Aren't you concerned that you would press the button - and vanish?


> It would be easy money and I'd feel exactly the same afterwards, just
> $5 richer. On the other hand, if pressing the button decreased the
> measure of those versions of me having good experiences by 1% relative
> to the versions of me having bad experiences, then I wouldn't press
> it, and certainly not repeatedly.

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