"Let us revisit the question in 20 years and see who was correct"
Sums up Brexit perfectly - nobody knows what will happen -
Economists have predicted that the adverse effects of Brexit will take this long to stabilise (if they ever do) - no responsible economic system can possibly survive on that basis, as the economists have stated over and over again - they need to plan.

Pause for a list of how many bad policies the Economists have backed from Guido the Gobshite
Jim Carroll