That's all irrelevant. A brilliant astrophysicist is not better at understanding say economics than an average Joe. Specialization is the thing. Hell Astrophysicists often suck at other physics specializations and vice versa.
And don't confuse smartness with IQ with intelligence. Being an academic might not be the smartest thing in the grand scheme of things. Being a plumber in a world that needs more plumbers might be smarter. That was just an example.
In a world where THE EXPERTS cannot agree on the long term results of Brexit. Anyone, I repeat ANYONE is smart enough to decide what's best. Because all we can agree on - with brexit life will continue in one way, without it in another and no one knows which is better LONG TERM. I said KNOWS. Everybody knows there will be issues SHORT TERM after Brexit. They are expected, they are even calculated. One side just screams "The end is nigh" the other "oh get a grip you lil' cunt, we'll pull through".