The reason I haven’t posted here before is that I’ve had no burning reason to, and I’m busy.

While there are many discrete reasons why cryonics hasn’t been (more) successful, the single biggest reason is the most obvious one; it has not been demonstrably shown to work. If suspended animation were a demonstrated reality tomorrow, and it was affordable (i.e., not like spaceflight, which is demonstrably workable, but not yet affordable) then the tide would be turned. Even then, it is unlikely there would be any kind of flash-stampede to the freezers.

A schoolmate and friend of mine just died a few weeks ago of pulmonary fibrosis. He was an ideal candidate for a lung transplant. But, he couldn’t afford it, so he just laid there and died. Thousands of people who need transplants die each year, even though it is a proven modality of treatment that is yielding a significant number of quality years of life. But, it is costly, there aren’t enough donors, and here’s the really remarkable thing, the vast majority of people who could benefit from a transplant are never even candidates.

Consider Richard DeVos, the co-founder of Amway: http://www.rickross.com/reference/amway/amway24.html. In 1983 DeVos, suffering from coronary artery disease, had bypass surgery. In 1992 DeVos had another bypass surgery, and by 1995 it was clear he had end stage congestive heart failure (CHF). How many people have you known or heard about who fit that description, and subsequently go on to die a perfectly pedestrian death; at home or in the ICU? Such deaths are so routine no one gives them a second thought.

And it’s for damn sure that no one gives them a second thought when the patient is a 71 year old man! However, if you are absolutely fixated on staying alive, and your net worth is well in excess of 2 billion 1997 dollars, well, the rules of the game are different for you. DeVos got his heart in London, and the Amway corporate jet flew him there from Grand Rapids, MI. That was in 1997, and as far as I know, DeVos is still alive. There are countless ~71 year old men in the US, and elsewhere in the Developed World, dying of CHF right now. In those cases, the word "transplant" is neither uttered nor heard – even though it is very much a reality that if you have the money, the persistence and the luck – a heart transplant offers the prospect of another 5 years of reasonably good quality life, on average.

I worked in hospital, mostly in critical care medicine, for 7 years. The overwhelming majority of patients are passive – they do what their physicians advise and if they do have alternative ideas, they are usually easily dissuaded from pursuing them. And, truth to tell, most of the “alternative ideas” patients have are bad ones, including Steve Jobs. But, if you are smart, lucky and rich – and you come to your senses, as Jobs did, it can be whole other ball game. Jobs suffered recurrent pancreatic cancer (islet cell neuroendocrine tumor) after a Whipple procedure in 2004. That is just about as close as you can get to a death sentence, since the usual location of the met(s) is the liver. It is current medical consensus that liver transplantation in patients with recurrent pancreatic cancer that has metastasized to the liver is contraindicated. In fact, I know a couple of transplant surgeons who call such a procedure a murderous waste of a liver, and a life! However, Jobs got a liver transplant in 2009. I strongly suspect that he has very recently received additional cutting edge treatment not widely available.

Cryopreservation/cryonics is likely to creep in on little cat’s feet – with a big jump or two along the way. Cryobanking of parenchymatous organs will probably be one jump, reversible cryopreservation of the brain another, and finally, whole body suspended animation. But it behooves us to beware that lots and lots of people are “calmly” accepting their fates today, who could in fact be ‘rescued’ by already extant medical technology - but for the knowledge, the money and the will. And THAT is what is NOT likely to change. To a surprising degree, people stay alive because it has been made very easy for them to do so. Make it difficult, and you start to see people dropping away.

Cryonics demands a very high passion for and commitment to staying alive, not just because it is currently such a lousy product, but because, to be really credible, it DEMANDS ACTION to improve the odds of its success. Most people are not activists, and what's more, most people will refuse a chance at more life when you take away the superficial things that they mistake for their person-hood, or identity. And cryonics proposes to do exactly that. There is historical precedent for this. In his incredibly insightful book, MAN'S SEARCH FOR MEANING, Viktor Frankl noted that the people in the Nazi concentration camps fell into two groups. The first group consisted of the majority of those interned there, and they were people who defined themselves in terms of their social milieu: if you asked them who they were, they would say, "I am a doctor, a lawyer, a mother..." The second group consisted of a small minority of people who thought of themselves as existing completely independent of any label, any role, or any relationship they had with others, or with society.

When you entered a concentration camp, they took away you clothes, your profession, your family and even your name. For most people, that was the equivalent of taking away their very identity, and thus their will to live. As Frankel observed, it was mostly only the people in second, much smaller group, that survived.

It is from that tiny minority in the population as a whole, that cryonics draws it adherents. They are people who want to live, regardless, and who do not define their sense of self on the basis of their jobs, their social interactions, or really, on anything other than a raw, visceral passion to survive. Some find that absolutely terrifying.

This was the first time I have seen Darwin's blog and it ate up much of my afternoon.

I'm glad to hear that; that was one of the goals - to introduce LW to Darwin a bit.

Does Darwin ever post on LessWrong, and if not I would be curious why not?

LW is a very recent thing. Darwin got involved in cryonics in, like, the 1960s. It's not surprising if, as he began polishing and dumping online what sometimes feels like decades of material, he didn't do so on some popular new transhumanist website; so there may be nothing there to explain. If there was, it may be that Darwin differs philosophically from LW in general (certainly Yudkowsky has vociferously criticized the excerpted post).

& then I found this on Darwin's site:

google ngram research on cryonics

Specifically he has a graph of "cryonics" (the word) citations in all periodicals scanned by google up to February 2011 versus time and it appears the most talked about item in the history of cryonics, ever, may well be Ted Williams's frozen head. He has a photograph of Williams in his article.

(& also I had never heard of this google ngram thing before and it looks remarkable.)

I have it from a good source that a famous inventor may sign up. (No, not that one.) If he follows through and goes into suspension before I do, I will wear a denim shirt to mark the occasion.