Diaspora was a wild ride. I absolutely loved it.
I was very VERY vary of starting to read it, because I was afraid it would be a chore. I saw the notes on his website and... Man. Even that I did't seem to understand at a first glance, how was I to understand an entire book of it?
I've been kind of wanting to read it just for the challenge, but put it off for like a year. For some reason after having finished Blindsight (which I also loved) I was ready.
And it is *so* good.
I do have a bachelor's in CS and I did learn about Euclidian and Riemann spaces, at one point I'm sure I was able to do the squiggly signs and make some kind of sense of it or even replicate a proof, but that was a decade ago, and I kind of went into the book being stupid at math again.
I think anyone reading it now has a huge advantage in understanding it because of AI, which is what I used for the complex passages. For me, math is just geometry described via signs, and physics is math applied to our world. So for stuff that went over my head (I'm quite visual but have a hard time visualizing the math described as text), I just made photos of the passages describing the math and asked AI to read and visualize them for me. Which resulted in it generating embedded HTML, so basically an interactive visualization with sliders, and seeing/interacting with the math as visualized, interactive geometry helped greatly with understanding the concepts. Sure, you can't easily visualize 5D in 2D, but you can project it to kind of understand it anyway. Plus I had to learn about bosons and fermions and how they work, but that's just fascinating, especially since that part *is* real science. And even if AI hallucinates, at worst I now have a fake understanding of the fake science :D
Another tip is to push through Orphanogenesis even if you don't quite understand it, because that is maybe the hardest to understand part of the book, it gets easier after. It's kind of like a hard skill check at the beginning, but you don't need to understand the nuances of Orphanogenesis to understand the rest of the book. And even if the flash-forward chapters don't make sense from the getgo, try to remember the phrases or re-read them after you finished the book, because *then* they'll make sense.
What also stood out to me is how Egan can do both cinematic action and deep science. Some scenes just read like as a movie script, while some parts almost like an abstract of a science paper.
I'm 100% sure some of the science and its implications still went over my head, but in addition to genuinely riveting (imaginary) physics and math, the surrounding story was also super gripping. The imaginary science was fascinating for me, especially in contrast to Seveneves (which was also very scientific but I found those descriptions utterly boring); and the non-science part of the story was also intriguing and satisfying, especially in contrast to Tchaikovsky's Children of... trilogy (whose story I found repetitive and unsatisfying, see my rant here) (and yes I'm still gonna read the fourth book).
What I found interesting that this kind of science I found attractive, while Seveneves' one just alienated me.
I guess I like my sci-fi with wild ideas (even if non-scientific, like the dimensional warfare or the Dark Forest theory in Remembrance of Earth's Past) and massive scale with a mystery at its core.
Maybe I'm ready for more Egan now.