Jack Mallah wrote:
> They might not, but I'm sure most would; maybe not exactly that U, but a 
> lot closer to it.

Can you explain why you believe that?

> No.  In U = Sum_i M_i Q_i, you sum over all the i's, not just the ones 
> that are similar to you.  Of course your Q_i (which is _your_ utility per 
> unit measure for the observer i) might be highly peaked around those that 
> are similar to you, but there's no need for a precise cutoff in 
> similarity.  And it's even very likely that it will have even higher peaks 
> around people that are not very much like you at all (these are the people 
> that you would sacrifice yourself for).
> By contrast, in your proposal for U, you do need a precise cutoff, for 
> which there is no justification.

Ok, I see what you're saying, and it is a good point. But most people 
already have a personal identity that is sufficiently well-defined in the 
current environment where mind copying is not possible, so in practice 
deciding which i's to sum over isn't a serious problem (yet).

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