What change occurred between 1991 and 2000 to explain the emergence of the bimodal distribution? Presumably lawyers have had paralegals for centuries.
> What happened? Well, if you’re an elite lawyer in the modern age, you probably command a large team of lower-tier lawyers, cheap paralegals, and so on, who are very good at using the Internet to look up case law and draft your opinions and so on. In contrast, if you’re an elite lawyer in the year 1990, it’s much more valuable for you specifically to have an encyclopedic knowledge of all the relevant case law, and it’s much harder for you to delegate modular pieces of work off to less competent people.