My thoughts
Finished
[Spoilers] This is a great read if you're in the mood for some head-spinning concepts. Lots of really great ideas that are still swimming around in my head a week or so after finishing the book. That said, a lot of the stories don't really mesh well together, concepts are not always explained without contradiction, and overall a lot of the ideas feel unfinished. I think the author thought so too, given their later work. I've been reading through qntm's catalog from newest to oldest. Lots of concepts within this book are explored in-depth in their more recent books (Ra, There is no Antimemetics Division, Valuable Humans in Transit) are touched on in "Fine Structure". If you liked those books, you'll likely enjoy this one even if it's just interesting to see how qntm's ideas evolved over time.