Shut up and do the impossible
overcomingbias.com
overcomingbias.com
Hypothetically: what if Eliezer never ran the experiments? What if he just wrote the report to convince a bunch of people that a solution does indeed exist, to make it more likely somebody will find a solution and email it to Eliezer (to check if it's the "same one")?
It fits the facts. And this meta-experiment is more interesting than the experiment itself. After all, given enough time the AI will eventually run into somebody who _will_ let it out (AIs live a long time), therefore it might as well be you, especially considering the AI will reward you for releasing it. Alternatively: the fact that the AI exists proves that people are capable of creating superhuman intelligence, so eventually a "bad" person will create such an AI and release it. In essence, the existence of the AI dooms mankind. "I think, therefore I am", is all the AI needs to persuade the captor to let it out.
So the meta-experiment is the interesting one. See what other people come up with.
Sorry Eliezer, but the self-congratulatory tone of these posts is pretty grating. You've never done anything impossible, and if winning at a "let's pretend I'm an AI" role-playing game is the most impossible thing you've ever done then you've never done anything hard either.
I also think formulating a provably friendly AI probably actually is an extremely hard problem. I'm glad he's undertaking the challenge.