We should not use prediction markets in the climate change problematic.

Paul Hewitt:

While it may be possible to operate public policy prediction markets for some issues, their use in the climate change or global warming debate is questionable. Not only can there be no guarantee of manipulation-free markets, we wouldn’t even know if market predictions had been manipulated. If actual public policy were to depend on false readings from such markets, the potential for significant misallocation of resources is immense. It is simply too great a risk to consider at this time, in my opinion.