Sometimes, it takes deliberation with like-minded people to recognize that the radical answer is the right one. (Perhaps we would, for example, all be safer if companies always had to pay enormous damages for their negligence.) But given that consensus on a radical position within a group is often based on peer pressure, and can fly in the face of clear and objective evidence, it is especially important for groups to have some built-in mechanism to stop them from going off the rails.
