For any individual, there must be a breadth vs. depth tradeoff. However, across individuals, there certainly need not be (and I think that is the intuition). S

For any individual, there must be a breadth vs. depth tradeoff. However, across individuals, there certainly need not be (and I think that is the intuition). Saying someone "reads for breadth" or "reads for depth" doesn't seem as justified if they read 10x as much as anyone else - relative to others, they "read for both."