I think there's even more to unpack, though. Yes, there will be a fair bit of repeated knowledge, but what the 30+ books do is cement your mental map and expose

I think there's even more to unpack, though. Yes, there will be a fair bit of repeated knowledge, but what the 30+ books do is cement your mental map and expose the common agreement and disagreements in the general field. From there, additional work may not be novel because there are a handful of insights and 200 pages of rehash once you have that mental map, but there is no single book developed that can implant that mental map. And that is true in most fields. It takes seeing multiple perspectives to figure out what will "stick" with you. Tiago Forte's "Building a Second Brain" stuck with me because I had already read "Getting Things Done" and a number of other productivity books. (As but one example.)