Is It True That Expected Value Is Logarithmic in Money?

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The default assumption or the rule of thumb is that expected value is approximately logarithmic in the amount of money you have. And this is kind of a very crude approximation, but it has some nice mathematical properties like doubling gives you the same additional increment with regardless of where you are. So there's some kind of scale invariance properties. If you take alogarithmic utility model, then actually this, the bet you you propose of 51% you double and 49% you go to nothing going to nothing is basically like, like log of zero is negative infinity.

What the heck happened with FTX and Sam Bankman-Fried? Were there early warning signs that most people failed to notice? What could've been done differently, and by whom? What effects will this have on the EA movement going forward?

Timestamps:

00:01:37 — Intro & timeline
00:51:48 — Byrne Hobart
01:39:52 — Vipul Naik
02:18:35 — Maomao Hu
02:41:19 — Marcus Abramovitch
02:49:38 — Ozzie Gooen
03:21:40 — Wrap-up & outro

Byrne Hobart writes The Diff, a newsletter covering inflections in finance and tech, which has 47,000+ readers. Previously he worked at a hedge fund covering Internet and media companies. Follow Byrne on Twitter at @ByrneHobart or subscribe to The Diff at thediff.co.

Vipul Naik holds a PhD in mathematics from the University of Chicago and is currently the head of data science at Equator Therapeutics, a drug discovery startup. He previously worked at a tech startup called LiftIgniter and then at The Arena Group, a media / tech company that acquired LiftIgniter. Learn more about him at his website, vipulnaik.com.

Maomao Hu is a blockchain, fintech, and AI entrepreneur and thought leader. He has been involved in organizations ranging from leading investment banks to new startups, to solve both microstructure problems like market surveillance and macrostructure problems like capital allocation. Currently, he leads development and quantitative research at asset manager Zerocap. Learn more about him at his website, thefirenexttime.com.

Marcus Abramovich is a managing partner at Enlightenment Ventures, an EA-aligned cryptocurrency hedge fund. Marcus also leads a Facebook group and Discord community of effective altruists focused on accumulating capital to donate to EA causes, and advises several cryptocurrency projects. Marcus discovered effective altruism as a PhD candidate at the University of Waterloo and professional poker player. Email him at marcus.s.abramovitch@gmail.com.

Ozzie Gooen is the president of The Quantified Uncertainty Research Institute. He has a background in programming and research. He previously founded Guesstimate and worked at the Future of Humanity Institute at Oxford. Follow him on Twitter at @ozziegooen or learn more about his current work at quantifieduncertainty.org.

Further Reading:

"Clarifications on diminishing returns and risk aversion in giving" by Rob Wiblin @ the EA forum on why he disagrees with the SBF's risk-taking approach [link]

References:

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