[GlobalFrog]

Reality would be closer to this: imagine you participated to the choice of the menu in the past, ate it, participate of the choice of the next menus in the future and commited to pay your share. You even eat some of the first courses in each menus, but before the end of the meal, you decide to get out and pay what you want of what you have started to eat and none of what you ordered next. Brexiters wanted to continue to eat without paying : that's not even close to what's needed to negociate with the EU.