The relation between expert communities and society at large does not take place in a vacuum, but in a field marred by vested interest. For if policies change, this creates winners and losers—and potential losers have an interest in the status quo remaining in place. One strategy they can choose is to accept the facts and openly fight for their interests. But often, these potential losers choose another strategy: undermine the public dissemination of the facts that would suggest that change is needed.