National politics is not something you walk into with mere “common sense”, neither is law nor military power nor economics nor international relations nor civil engineering, yet we all have Opinions about these things which we are encouraged to share via democracy.

It’s really easy to convince a crowd with appeals to fallacies of common sense or logic — in the case of Brexit, for example, I’ve seen people argue that the EU is simultaneously evil for not providing Greece with enough of a bail out, and also evil for asking rich countries like the UK to pay more money than it receives from the EU (which it does to help poor countries like Greece).

Such fallacies even affect people with degrees from Cambridge University, it’s not merely something we can blame on poor education and pretend we’re immune to.

it's perfectly consistent if you realise the EU and the Eurozone are not the same thing and have different competing interests

Try that one on and tell me how reasoned or moral it sounds.