It pretty much goes downhill from there.
Article: https://www.newyorker.com/magazine/2016/10/10/sam-altmans-ma...
Paul Graham fired Sam Altman from YC on the spot for "loss of trust". Full details unknown.
"Ice Nine" is a fictional assassination device that makes you turn into ice after consuming ice (?) https://en.m.wikipedia.org/wiki/Ice-nine
"Ice IX" (ice nine) is Ice III at a low enough temperature and high enough pressure to be proton-ordered https://en.m.wikipedia.org/wiki/Phases_of_ice#Known_phases
So here, Sam Altman is stating a death threat.
If we're seriously entertaining this off-handed remark as a measure of Altman's true character, it means not only would be willing willing to murder an adversary, but he'd be willing to risk all humanity to do it.
What I take away from this remark is that Altman is a nerd, and I look forward to seeing a shaky cell-phone video of him reciting one of the calypsos of Bokonon while dressed as a cultist at a SciFi convention.
At the moment all the engineers at OpenAI, including gdb, who currently have their credibility in tact are nerd-washing Altman's tarnished reputation by staying there. I mentioned this in a comment elsewhere but Peter Hintjens' (ZeroMQ, RIP) book called the "Psychopath Code"[1] is rather on point in this context. He notes that psychopaths are attracted to project groups that have assets and no defenses, i.e. non-profits:
If a group has assets and no defenses, it is inevitable [a psychopath] will invade the group. There is no "if" here. Indeed, you may see several psychopaths striving for advantage...[the psychopath] may be a founder, yet that is rare. If he is a founder, someone else did the hard work. Look for burned-out skeletons in the closet...He may come with grand stories, yet only by his own word. He claims authority from his connections to important people. He spends his time in the group manipulating people against each other. Or, he is absent on important business...His dominance is not earned, yet it is tangible...He breaks the social conventions of the group. Social humans feel fear and anxiety when they do this. This is a dominance mask.
A group of nerds that want to get shit done and work on important problems, who are primed to be optimistic and take what people say to their face at face value, and don't want to waste time with "people problems" are susceptible to these types of characters taking over.
[0] https://old.reddit.com/r/AskReddit/comments/3cs78i/whats_the...
[1]https://hintjens.gitbooks.io/psychopathcode/content/chapter4...
Oh okay, I didn't really grok that implication from my brief scan of the wiki page. Didn't realize it was a cascading all-water-into-Ice-Nine thing.