To whom are you asking the question? I'd be dead. That computer program running a simulation of me would be a real person, yes, with all associated moral implications. It'd even think and behave like me. But it wouldn't be me - a direct continuation of my personal identity - anymore than my twin brother or any of the multiverse copies of "me" are actually me. If my brain was still functioning at all I'd be cursing the technicians as they ferry my useless body from the uploader to the crematorium. Then I'd be dead while some digital doppelgänger takes over my life.
Do you see? This isn't about whether uploading works or not. Uploading when it works creates a copy of me. It will not continue my personal existence. We can be sure of this, right now.
On what grounds do you believe that the person who wrote that comment is the same person who is reading this response?
I mean, I assume that the person reading this response thinks and behaves like the same person (more or less), and that it remembers having been the person who wrote the comment, but that's just thought and behavior and memory, and on your account those things don't determine identity.
So, on your account, what does determine identity? What observations actually constitute evidence that you're the same person who wrote that comment? How confident are you that those things are more reliable indicators of shared identity than thought and behavior and memory?
Background:
On the most recent LessWrong readership survey, I assigned a probability of 0.30 on the cryonics question. I had previously been persuaded to sign up for cryonics by reading the sequences, but this thread and particularly this comment lowered my estimate of the chances of cryonics working considerably. Also relevant from the same thread was ciphergoth's comment:
Based on this, I think there's a substantial chance that there's information out there that would convince me that the folks who dismiss cryonics as pseudoscience are essentially correct, that the right answer to the survey question was epsilon. I've seen what seem like convincing objections to cryonics, and it seems possible that an expanded version of those arguments, with full references and replies to pro-cryonics arguments, would convince me. Or someone could just go to the trouble of showing that a large majority of cryobiologists really do think cryopreserved people are information-theoretically dead.
However, it's not clear to me how well worth my time it is to seek out such information. It seems coming up with decisive information would be hard, especially since e.g. ciphergoth has put a lot of energy into trying to figure out what the experts think about cryonics and come away without a clear answer. And part of the reason I signed up for cryonics in the first place is because it doesn't cost me much: the largest component is the life insurance for funding, only $50 / month.
So I've decided to put a bounty on being persuaded to cancel my cryonics subscription. If no one succeeds in convincing me, it costs me nothing, and if someone does succeed in convincing me the cost is less than the cost of being signed up for cryonics for a year. And yes, I'm aware that providing one-sided financial incentives like this requires me to take the fact that I've done this into account when evaluating anti-cryonics arguments, and apply extra scrutiny to them.
Note that there are several issues that ultimately go in to whether you should sign up for cryonics (the neuroscience / evaluation of current technology, estimate of the probability of a "good" future, various philosophical issues), I anticipate the greatest chance of being persuaded from scientific arguments. In particular, I find questions about personal identity and consciousness of uploads made from preserved brains confusing, but think there are very few people in the world, if any, who are likely to have much chance of getting me un-confused about those issues. The offer is blind to the exact nature of the arguments given, but I mostly foresee being persuaded by the neuroscience arguments.
And of course, I'm happy to listen to people tell me why the anti-cryonics arguments are wrong and I should stay signed up for cryonics. There's just no prize for doing so.