That's a very good question. They call the series "Ideas for Progress," and yet all the authors are men based in the U.S., and everyone blurbing these books also appears to be a man based in the U.S.

Fine, okay, maybe sometimes the diversity argument gets annoying and stale, but seriously‽

There's a reason publishers exist. If they're good, they have enough experience to not be so myopic and tone-deaf.