I did like the book but I also thought they solved huge problems in a single short chapter with minimal detail.
In one chapter it’s mentioned that one of the characters is working on some open source social media. A few chapters later it becomes the dominant social media in the world… oh and also payment method… Oh and blockchain…
Being a big fan of Lemmy, I think the book is a bit optimistic.
The Three Body Problem also had a habit of coming up with really interesting concepts, which could have themselves been entire books, then dropping them after a chapter or two.
For example the device that could make anyone truly believe anything. They never got too techy about how it worked but after a chapter or two you really felt like you had explored some implications of such a technology on society.
I guess it’s a bit much to ask a book about climate disaster to provide detailed insight into what the future may hold for Lemmy.