If we'd known then what we know now

So Dominic Cummings has said that he drove to Bernard Castle (having previously lied and said he didn't I think) to test his eyesight. Because that's what you do if you're worried about your eyesight: you get in a car, with your wife and young child, and you drive 30 miles. Risking your life, your wife and young child's lives, and the lives of anyone you hit along the way if it turns out that your eyesight isn't so good after all. Something seems to be terribly wrong with his mind: if he th...