What this means is that you negotiate every single aspect of your relationship with the EU on a case by case basis. And this means everything – when the Swiss wanted to join the Agency that produces common environmental statistics, they had to haggle. When they wanted to go through Schengen customs as if they were European, they had to let another umpty thousand lorries through their mountain passes. There is a whole unit of the European Commission Trade Directorate-General that is devoted to playing hardball with the Swiss. It's also very slow, and difficult to adjust.