November 10, 2013 9:00am by David Farrar

Abusing Science in the Cause of Paternalism

Jamie Whyte at the IEA writes:

Politicians and lobbyists who promote new regulations and taxes typically claim to have science on their side. Scientific evidence shows that the actions they wish to discourage are harmful and that government intervention would reduce this harm. Yet much ‘evidence-based policy’ is grounded on poor scientific reasoning and even worse economics.
Recent examples of flawed evidence-based policy include the proposal to introduce a minimum alcohol price, the ban on smoking in enclosed public spaces, measures to reduce greenhouse gas emissions and attempts to increase gross national happiness.
A frequent error is to ignore the costs resulting from the policy. For example, minimum alcohol price plans do not consider the welfare losses associated with reduced consumption among recreational drinkers. The benefits of alcohol consumption, and hence the cost of reducing it, are simply ignored in the analysis.
Evidence-based policy typically also fails to account for substitution effects, such as the way a minimum alcohol price would encourage consumers to purchase drinks in the shadow economy or adopt intoxicating alternatives to alcohol.
High levels of scientific doubt are often concealed as a result of ‘noble-cause corruption’. Scientists may exaggerate levels of confidence in their findings if it promotes actions they happen to support. This problem is particularly acute in fields that have long been policy battlegrounds, such as climate, health and education. Many scientists entered such fields because they were already committed to a particular policy agenda.
Paternalist policies promoted by experts and politicians show contempt for the actual preferences of the general public. People are forced to live according to values that they reject. For example, supporters of ‘happiness policy’ believe the state should coerce people to act against their preferences in ways that policymakers think will increase their wellbeing.

We see this all too often in NZ.