Conversely, people who may not look or sound like a traditional expert, but are good at making predictions

The weird rationalist assumption that being good at predictions is a standalone skill that some people are just gifted with (see also the emphasis on superpredictors being a thing in itself that's just clamoring to come out of the woodwork but for the lack of sufficient monetary incentive) tends to come off a lot like if an important part of the prediction market project was for rationalists to isolate the muad'dib gene.