Marcello is Marcello Herreshoff, a math genius and all around cool guy who is Eliezer’s apprentice/coworker. Eliezer has mentioned on LW that he and Marcello “work[ed] for a year on AI theory”, and from conversations about these things when I was at Benton(/SIAI House) for a weekend, I got the impression that some of this work included expanding on and formalizing CEV, though I could be misremembering.
(Regarding “where did you hear this, if it’s not available to the public?” — I don’t think the knowledge that this research happened is considered a secret, only the content of it is. And I am not party to any of that content, because I am still merely a wannabe FAI researcher.)
Marcello is Marcello Herreshoff, a math genius and all around cool guy who is Eliezer’s apprentice/coworker. Eliezer has mentioned on LW that he and Marcello “work[ed] for a year on AI theory”, and from conversations about these things when I was at Benton(/SIAI House) for a weekend, I got the impression that some of this work included expanding on and formalizing CEV, though I could be misremembering.
(Regarding “where did you hear this, if it’s not available to the public?” — I don’t think the knowledge that this research happened is considered a secret, only the content of it is. And I am not party to any of that content, because I am still merely a wannabe FAI researcher.)