A good proxy measure for the accuracy of BBdM's prediction would be how rich he got out of them. Given that BBdM's mostly concerned with macroscopic predictions about politics his claim [1] that he was right in 2/3 of his predictions, should have translated into immense wealth.
[1] Source: an old interview with him, maybe 10 years ago. I might be wildly misremembering here. Sorry, no better sources.
Re:Game theory in practice (2011)
by ThrustVectoring on Tuesday February 07, 2017 @05:19PM
(#13593455)
Being correct in 2/3rds of predictions isn't enough to get rich - he could very well have gotten more things wrong than the conventional wisdom that earns $0 on average.
In stories like these I always like to know how many incorrect predictions they made as well. I mean, if a squid can predict the results of a sports game, how impressive is what Bruce Bueno de Mesquita did?