I had lunch with Nassim on Friday. He is one of the most intellectually gripping men on the planet. He is also full of helpful advice, based on Pareto distributions and other such exotica, on how to live one’s life. He applauded me for being seven minutes early – I am usually at least half an hour early – saying this was ideal, told me to spend no more than four hours a week on doing horrible things like, tax, bills and so on and strongly recommended walking downhill for back pain. The rest of the conversation was off the record and thrilling.