No doubt both have always been in some degree present – and it would be a soulless politics indeed that was purely technocratic. But it becomes extremely problematic when feeling and sentiment completely swamp rationality and evidence. That is not just because it creates unworkable policy but because it becomes self-re-enforcing: the more the policy fails, the greater the belief that with more faith it would work. It’s not just that it isn’t evidence-based or even that it is evidence-immune, it is that it thrives on evidence that contradicts it.
— Chris Grey on the collision between technocratic politics based upon rational argument and evidence, and faith-based politics based upon feeling and sentiment