Forwarding you to

The View from Cullingworth: The world is not an engineering problem - an argument against technocracy

to see the onward march of this "what works is what's right" approach to policy-making. Dillow speaks of how some things are, as it were, felt rather than analysed - the "best case for Brexit is an intrinsic one – that it’ll give us a sense of independence and sovereignty" and when advocates try to set out economic utilitarian gains from leaving their argument weakens.