Speaking as someone whose introduction to transhumanist ideas was the mind-altering idea shotgun titled Permutation City, I've been pretty disappointed with his take on AI and the existential risks crowd.
A reoccurring theme in Egan's fiction is that "all minds face the same fundamental computing bottlenecks", serving to establish the non-existence of large-scale intrinsic cognitive disparities. I always figured this was the sort of assumption that was introduced for the sake of telling a certain class of story - the kind that need only be plausible (e.g., "an asteroid is on course to hit us"), and didn't think much more about it.
But from what I recall of Egan's public comments on the issue of foom (I lack links, sorry) he appears to have a firm intuition that it's impossible, grounded by handwaving "halting problem is unsolvable"-style arguments. Which in turn seemingly forms the basis of his estimation of uFAI scenarios as "immensely unlikely". With no defense on offer for his initial "cognitive universality" assumption, he takes the only remaining course of argumentation...
but frankly, their attempt to prescribe what rational altruists should be doing with their time and money is just laughable
...derision.
This spring...
Egan, musing: Some people apparently find this irresistible
Greg Egan is...
Egan, screaming: The probabilities are approaching epsilon!!!
Above the Argument.
Egan, grimly: Yudkowsky is off the air.
A reoccurring theme in Egan's fiction is that "all minds face the same fundamental computing bottlenecks", serving to establish the non-existence of large-scale intrinsic cognitive disparities.
This still allows for AIs to be millions of times faster than humans, undergo rapid population explosion and reduced training/experimentation times through digital copying, be superhumanly coordinated, bring up the average ability in each field to peak levels (as seen in any existing animal or machine, with obvious flaws repaired), etc. We know that huma...
Link: johncarlosbaez.wordpress.com/2011/04/24/what-to-do/
His answer, as far as I can tell, seems to be that his Azimuth Project does trump the possibility of working directly on friendly AI or to support it indirectly by making and contributing money.
It seems that he and other people who understand all the arguments in favor of friendly AI and yet decide to ignore it, or disregard it as unfeasible, are rationalizing.
I myself took a different route, I was rather trying to prove to myself that the whole idea of AI going FOOM is somehow flawed rather than trying to come up with justifications for why it would be better to work on something else.
I still have some doubts though. Is it really enough to observe that the arguments in favor of AI going FOOM are logically valid? When should one disregard tiny probabilities of vast utilities and wait for empirical evidence? Yet I think that compared to the alternatives the arguments in favor of friendly AI are water-tight.
The problem why I and other people seem to be reluctant to accept that it is rational to support friendly AI research is that the consequences are unbearable. Robin Hanson recently described the problem:
I believe that people like me feel that to fully accept the importance of friendly AI research would deprive us of the things we value and need.
I feel that I wouldn't be able to justify what I value on the grounds of needing such things. It feels like that I could and should overcome everything that isn't either directly contributing to FAI research or that helps me to earn more money that I could contribute.
Some of us value and need things that consume a lot of time...that's the problem.