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Since the Introdus in the twenty-first century, humanity has reconfigured itself drastically. Most chose immortality, joining the polises to become conscious software. Others opted for gleisners: disposable, renewable robotic bodies that remain in contact with the physical world of force and friction. Many of these have left the solar system forever in fusion-drive starships. And there are the holdouts: the fleshers left behind in the muck and jungle of Earth-some devolved into dream apes, others cavorting in the seas or the air-while the statics and bridgers try to shape out a roughly human destiny. But the complacency of the citizens is shattered when an unforeseen disaster ravages the fleshers and reveals the possibility that the polises themselves might be at risk from bizarre astrophysical processes that seem to violate fundamental laws of nature. The orphan Yatima, a digital being grown from a mind seed, joins a group of citizens and flesher refugees in a search for the knowledge that will guarantee their safety-a search that puts them on the trail of the ancient and elusive Transmuters, who have the power to reshape subatomic particles, and to cross into the macrocosmos, where the universe we know is nothing but a speck in the higher-dimensional vacuum.… (more)
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DDC/MDS
823 |
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Library's review
It's also about how beings who are profoundly different from each other might still communicate in a meaningful
There's also a great deal of cosmology and physics in the novel. Its exposition isn't the greatest - it really feels like infodumps and some diagrams would help - but it's essential to the shape of the novel: because once you remove all the ordinary restrictions of the human condition, what's left? The restrictions imposed by the physics of the universe(s), that's what.
This is science fiction by the strongest definition of the genre: the science is an essential component of the story that it tells. I don't see novels like this very often anymore.
At the end of the book, the breadth of the canvas had become the entire age of the universe, & I lost interest as I usually do when that happens. But there were a lot of good ideas, or really well expressed ideas, throughout - I did much more (kindle) highlighting on this book than I usually do.
I find Greg Egan to be uneven to my tastes, but this one's a goodie.
User reviews
Some readers found the lack of drama in the book to be a turn-off, but for me, the detailed descriptions of the life and culture of digital entities more than makes up for it. (And the moments when the protagonist achieved self-awareness both made me smile and sent shivers down my spine, especially on the second reading.) That's only for the first third of the book or so, though - after that, the cogsci enthusiasm changes to theoretical physics enthusiasm and there's so much stuff about five-dimensional universes and elementary particles made up of wormholes that the society description becomes a distant second. To me, that's a pity, but the first third is so strong that the book deserves four stars nonetheless.
The cover art is unfortunate - from a distance (or reduced in size, as here) it looks like a skull with a clown nose.
Humans have used technology to evolve into a variety of different post-human entities, ranging from full-on robots who live in space, to nonverbal intelligent humans who live on the Earth, as well as software
Seems like near utopia -- until the robot people discover a galactic disaster that threatens everybody's survival. The on-the-ball software people have to convince the iconoclastic fleshers that the problem is real and imminent, as well as the navel-gazing solipsist cities who pretend the outside world doesn't exist. Neither of which want to deal with it.
Like Wil McCarthy, Egan invents a fascinating pseudophysics to give his characters powerful new tools to use. Like Peter Watts, he introduces alien entities that blur the boundaries of what we call consciousness, reality, selfhood. The universe-stretching finale invites comparison to Childhood's End.
All the traditional sci-fi concepts are here, but they've been expanded so adroitly, so meticulously, that
The quest of Yatima and his companions goes so far beyond the expected space-time continuum that it's hard to fathom. The end of the novel will leave you gobsmacked. Have they really gone this far? How much further will Yatima go still? Is Yatima's fate a blessing or a curse...or will it flip-flop between the two as the eons pass?
The xenobiology, the celestial calamities, the massive engineering projects, the elusive Transmuters, always just out of reach...it's all exquisitely detailed.
But that detail is a double-edged sword. Reading “Diaspora” is like reading a textbook. All of its concepts are discussed seriously and at great length. There are few summaries or shortcuts. I probably didn't understand half the novel.
If Egan had pulled back just a little, if he'd helped us along instead of dumping esoteric data on us and expecting us to slog through it on our own, this novel would be nearly perfect. As it's written, though, it's nearly undecipherable to the layperson.
Its concepts are still so dazzling that they'll stick with me for a long time, but to absorb the barest understanding of them required a ton of work. Those with scientific expertise may be in heaven if they try this novel, but I can't recommend it to the casual reader.
I've enjoyed other books by Egan, and I think this one is an anomaly; the constant references to
In this case it was a relief. I'm sure that other people have enjoyed this work, and it's probably just my own peculiarities that keep me from liking it. I may return to it someday. Then again, life is short, and there's so much still to do.