On Wednesday I debated my ex-co-blogger Eliezer Yudkowsky at a private Jane Street Capital event (crude audio here, from 4:45; better video here [as of July 14]).
I “won” in the sense of gaining more audience votes — the vote was 45-40 (him to me) before, and 32-33 after the debate. That makes me two for two, after my similar “win” over Bryan Caplan (42-10 before, 25-20 after). This probably says little about me, however, since contrarians usually “win” such debates.
Our topic was: Compared to the farming and industrial revolutions, intelligence explosion first-movers will quickly control a much larger fraction of their new world. He was pro, I was con. We also debated this subject here on Overcoming Bias from June to December 2008. Let me now try to summarize my current position.
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It thus seems quite unlikely that one AI team could find an architectural innovation powerful enough to let it go from tiny to taking over the world within a few weeks.
The debate seems to be about the probability of the specific "AI in a basement goes foom" scenario. There are surely other existential risk scenarios which seem more Hansonian, e.g. firms gradually replacing all of their human capital with computers and robots until there are no humans left?
Hanson's arguments here don't apply to nation-states that start off with a large portion of world research resources and stronger ability to keep secrets, as we saw with nuclear weapons. He has a quite separate argument against that, which is that governments are too stupid to notice early brain emulation or AI technology and recognize that it is about to turn the world upside down.