I think that you can consider the Remain / Leave argument in the abstract as being a debate between: 1. Ability to change rules more rapidly and in a way that

I think that you can consider the Remain / Leave argument in the abstract as being a debate between: 1. Ability to change rules more rapidly and in a way that better suits local conditions. 2. Greater interntational cooperation and coordination. The problem is that although 1. sounds like an unadulterated benefit it isn't always. It's more likely to result in rules that swing rapidly between approaches (as government changes especially in a system like the UK's) and also probably more susceptible to regulatory capture. So it's not really abour 'running better' - it's about stability at the expense of a degree of responsiveness.