1) Tim Wu, a much quoted law professor, thinks the government should use the antitrust laws to break up Amazon.In a 2018 interview he said, "What I think is good about Amazon is ... they do deliver lower prices for people. The problem with them: No. 1, I think they can be rough on little companies."

We do not know whether there is a law library in Heaven. But if there is, we know that Judge Robert Bork is sitting in a very comfortable chair calmly drinking scotch and smoking cigarettesor at least he was until he read Professor Wu's interview. Why would Judge Bork be so annoyed at Professor Wu's comment? Can you imagine any argument that might make Bork inclined to support breaking up Amazon. (Big hint: make mention of the unique economics of businesses like Amazon, Facebook and Google.)

2) Chamath Palihapitiya and Warren Buffet have one thing in common: they're both billionaires. Other than that, though, they're very different. Mr. Palihapitiya is the kind of guy who posts pictures of his workouts on Twitter. Mr. Buffet is the kind of guy who drives through McDonald's to pick up his breakfast.

While they both run investment firms that purchase existing companies, they're strategies seem very different. Mr. Palihapitiya prefers flashy companies in unique businesses where there is not a lot of direct competitionone of his companies bought Virgin Galactica, a firm selling rides into space. Mr Buffet prefers businesses that sell established products in competitive marketshis firm owns, a railroad, a candy company and other such businesses.

Most people will characterize Mr. Mr. Palihapitiya is a cocky, self-confident risk taker. Mr. Buffet, by comparison seems timid, cautious and conservative. Do you think this is correct? (Big Hint: On the continuum between perfect competition and pure monopoly where would you place the sorts of businesses that Mr. Buffet and Mr Palihapitiya seem to like? What does the theory of monopoly and competition tell us about what is required for success in competitive markets?)