What makes you believe that? Cryonics is relatively well known among scientifically educated audiences. it's even the main plot device of a tv show aimed at general audiences (Futurama).
You seem to be suggesting that the knowledge physicists have about cryonics is based on their generalist knowledge as educated layment. You further observe that much of this knowledge comes from fictional evidence in popular culture. I heartily agree.
Seriously, where do you think information theory comes from?
Physics and mathematics. My comment doesn't suggest otherwise. This does not mean that all physicists are particularly well versed in it when it is not their area of expertise.
Except that cryonics is actually in their area of expertise.
This is your core confusion. Reasoning from this premise would indeed lead you to the conclusion you reach. Given that I reject this premise it follows that I can gain little information from all the chains of reasoning that you base upon it. Neuroscientists are not experts in extracting one to one mappings from preserved brain tissue to individual identities. This is why the expected behaviour of neuroscientsists is to do what experts nearly always do when thinking about things outside their field---pattern match to the nearest thing within their field and overestimate the relevance of their knowledge.
Irrelevant ad hominem.
False. You have the common misunderstanding of what that logical fallacy refers to. If my argument was "this is a confirmed troll therefore its words are false" it would be an ad hominem fallacy (mind you, a slightly weakend variant would hold even then, to whatever extent personal testimony of the troll was considered evidence). This was not argument in that quote. It is highly relevant to why I believe it was necessary to excuse myself for the act of replying to disruption attempts.
You seem to be suggesting that the knowledge physicists have about cryonics is based on their generalist knowledge as educated layment. You further observe that much of this knowledge comes from fictional evidence in popular culture. I heartily agree.
The existence of cryonics is common knowledge. You just need an internet connection to look up the details.
Physics and mathematics. My comment doesn't suggest otherwise. This does not mean that all physicists are particularly well versed in it when it is not their area of expertise.
Still I expect them t...
In the past, the Cryonics Institute has had a policy that said that they would not accept anyone who is not a member. This has changed. The policy now is that someone who has full legal authority over your body can sign you up after you die. It costs $36,250 to be frozen if you are not signed up, which is more expensive. They also will not do anything until you have been on dry ice for 2 weeks after they have been contacted, so not being a member is more risky.
This is very important news for anyone who is currently cryocrastinating. It means that you can drastically increase your chances of survival without filling out any forms. All you have to do is tell a loved one you want to be frozen upon death, and that you would like them to take responsibility for making sure this happens. This takes literally 30 seconds. Do it now!
This news might also be a reason to not sign up right away, if you think something better (like radical life extension or uploading) will come along in your lifetime. We should discuss this in the comments.
Edit: The general consensus of this discussion is that this is a really bad reason not to sign up for cryonics.