Politicians should be experts in many things. Their job is (in the ideal theoretical sense of our political systems) hard and very responsible. What they hell are they doing with their time? Sit in endless pointless meetings? Secret meetings with large business? Faking smiles 13 times a day? WHAT are they doing exactly?

And then -- "we're too busy to know this stuff". In an ideal world such a politician would fly far away from office immediately, and all the people who benefitted from that would have to return the gained money from the loopholes, or live in cozy conditions in the jail. One can dream, right?

So, what are the politicians supposed to know? How to bullshit the general populace on TV?