There is a caricature of policy making in which it is presented as an exercise in introspection, free of evidence and free in particular of contact with those who might experience and understand the context and impact of its delivery. Like all good caricatures, there is something recognisable in that, and like all good caricatures, those caricatured more easily see the distortion than the likeness.
The underlying challenge in this post is a good one. Emphasis on things which can be measured distorts attention from things which may be just as important but are more elusive. Understanding the variation around a central figure is as important as understanding the central figure itself – and can tell you very different things. Broader and more qualitative approaches are an essential complement to narrower and more quantitative ones.
But policy makers are people too. Dismissing them as ivory towered elitists is too easy. It would be good to have more empathetic policy makers, but more empathy with policy makers is part of what we need to get there. Policy making is itself the product of a system – and understanding the drivers and behaviours of that system is the essential first step to changing it.