MawBe
Just saying it is easy to be wise after the event.
All the warnings were there- again and again. But the reply to the experts was constantly 'Project Fear'.
However, those who did not study the issues, did not listen to the experts' warnings - could not 'be wise' - you can only be wise if you are told exactly what you vote for, and all the pros and cons. In this case, 'Brexit' was a totally fictional concept, that not even the most ardent of Brexiters could agree about.
Brexit should have been clearly defined for what it would be- with all the pros and cons clearly pointed out, honestly and truthfully. It was NOT. So being 'wise' was not easy- especially as so much of it was based on pure lies.
Horse has bolted- lots of damage done. Horse can now choose to not jump over the cliff- Horses can be very wise.