I agree with you that people like him do a service to prediction markets: contributing a huge amount of either liquidity or information. I don’t agree with you that it is clear which one he is providing, especially considering the outcome. He did also win his popular vote bet, which was hovering around, I’m not sure, ~20% most of the time?
I think he (Theo) probably did have a true probability around 80% as well. That’s what it looks like at least. I’m not sure why you would assume he should be more conservative than Kelly. I’m sure Musk is not, as one example of a competent risk-taker.
I interpret the main argument as:
You cannot predict the direction of policy that would result from certain discussions/beliefs
The discussions improve the accuracy of our collective world model, which is very valuable
Therefore, we should have the discussions first and worry about policy later.
I agree that in many cases there will be unforeseen positive consequences as a result of the improved world model, but in my view, it is obviously false that we cannot make good directionally-correct predictions of this sort for many X. And the negative will clearly outweigh the positive for some large group in many cases. In that case, the question is how much you are willing to sacrifice for the collective knowledge.
If you want to highlight people who handle this well, the only interesting case is people from group A in favor of discussing X where X is presumed to lead to Y and Y negatively impacts A. Piper’s X has a positive impact on her beliefs (discussing solutions to falling birth-rates as one who believes it is a problem), and Caplan’s X has a positive impact on him (he is obviously high IQ), so neither of these are interesting samples. There is no reason for either of these to inherently want to avoid discussing these X. Even worse, Caplan’s rejected “Y” is a clear strawman, which begs the question and actually negatively updates me on his beliefs. More realistic Ys are things like IQ-based segregation, resource allocation, reproductive policies, etc.
If I reject these Ys for ideological reasons, and the middle ground looks like what I think it looks like, I do not want to expose the middle ground.