I think you’re being deliberately mischievous posing the question like that. How can it not be achievable for the fifth largest economy in the world to exist outside the EU when about 170 other countries around the globe somehow manage to do. If on the other hand you ask how annoyed will I be if the Remain dominated Parliament goes against the will of the majority as expressed in the 2016 referendum when they had promised to faithfully enact the result, then obviously furious. But no longer surprised, they have been undermining it from day one. But if they think that is the end of the story then they are wrong. The genie has been let out of the bottle, it will be impossible to put back.