Doubt is the product What this book says, and the film elucidates is there is a selective specific group of "scientists" who have a particular playbook to discredit, confuse and "muddy the waters" against scientific research for their sponsors. What these group of people or interest groups have learned from the days of dealing with the tobacco industry, is that they need not concern themselves with trying to prove anything or to disprove the scientists. All they need is to seed doubt and confusion in the market of public opinion, their main motto is "Doubt is our product". As, when people are confused and the policies are difficult to interpret because they are complicated, ambiguous, inconclusive, etc then there will be great difficulty in organizing widespread opposition to it. They deliberately frustrate governments into inaction, blocking them by using their lobbyist and "experts" and hence stop all ways of finding effective solutions...