virtual currency
People bet differently when they have something real at stake - ever tried to play poker with no money behind the chips? It's a completely different (and completely boring) game. It's the reason the market instantly knew who was responsible for the Challenger crash (when it took Richard Feynman and the rest of genius scientists on the panel months to even have a plausible idea).
Sorry for the scribd link. It's the first copy I found that wasn't behind a pay wall.
The gist is that within a few hours of the Challenger crash the stock for the company responsible for the component that failed went down far more than the stocks for other companies involved in building challenger. Interestingly, the equity value the stock lost (~200 Million USD) is almost exactly the same as the estimated total loss in profit (fines, lawsuits, updates to safety standards, lost contracts, etc).
No one is saying we should use markets for safety investigations - we are saying that we should use it predicatively.