The Overnight Test Is Essential for Intelligence

I'm just a cryptic crossword fan. Apologies to Americans in the audience because they don't really have them. The nation, I think has one, but it's very rare. It's an extraordinary thing where you can look at the same crossword completely bemused and then come back to it after some period of self-distraction. Well, you see, my parents' generation would say, let's sleep on that. And I don't think young people say that. In other words, we're aware that if you just let it go for a few hours and had some sleep and woke up the morning and then came back to it again,. They knew that something would