Permutation City [Mass Market Paperback]

Greg Egan (Author)

Book Description

Publication Date: 1994

The story of a man with a vision - immortality : for those who can afford it is found in cyberspace. Permutation city is the tale of a man with a vision - how to create immortality - and how that vision becomes something way beyond his control. Encompassing the lives and struggles of an artificial life junkie desperate to save her dying mother, a billionaire banker scarred by a terrible crime, the lovers for whom, in their timeless virtual world, love is not enough - and much more - Permutation city is filled with the sense of wonder.

Editorial Reviews

About the Author

Greg Egan lives in Perth, Western Australia. He has won the John W. Campbell award for Best Novel and has been short listed for the Hugo three times.

Product Details

• Mass Market Paperback: 309 pages
• Publisher: Orion (1994)
• Language: English
• ISBN-10: 0752816497
• ISBN-13: 978-0752816494
• Product Dimensions: 6.8 x 4.3 x 0.9 inches
• Shipping Weight: 6.4 ounces
• Average Customer Review: 4.1 out of 5 stars  See all reviews (55 customer reviews)
• Amazon Best Sellers Rank: #900,026 in Books (See Top 100 in Books)

More About the Author

I am a science fiction writer and computer programmer. You can find information, illustrations and interactive applets that supplement my books at www.gregegan.net

Customer Reviews

Most Helpful Customer Reviews

24 of 25 people found the following review helpful:

5.0 out of 5 stars Excellent portrayal of strong AI and its implications, April 23, 2003

By 

Jack Boyce (Sunnyvale, CA USA) - See all my reviews
(REAL NAME)   

This review is from: Permutation City (Mass Market Paperback)

Greg Egan is the first fiction writer I've seen who takes the concept of AI somewhat seriously (see my detractions below). In virtually all science fiction, AI is either not present (Dune), artificially rare (Star Wars, William Gibson), somehow deficient relative to the "real" intelligence of humans (Star Trek), or easily tamed into servitude (Asimov). Egan thankfully avoids these lame cop-outs and provides a more realistic view of what might happen when our hardware can support human-mind-scale computation.

Some of the extrapolation is fairly straightforward, for example the idea that the first humans to have themselves "scanned" and instantiated within a computer as Copies will be the elderly and the fatally ill. Egan goes many orders beyond the straightforward, however, and hits on some big questions: If I get moved into a computer, is it still "me"? Should sentient software be considered legally human? If I am a program running in a computer and I edit my memories and my most basic desires, have I become a new person? If I halt a Copy's program and archive their data indefinitely, have I "killed" the Copy? What would it be like to be forced to live forever within a computer, with no ability to commit suicide ("bail out")? If these are interesting philosophical questions today, they will become much more tangible over the coming decades as (or if, depending on your view) AI develops.

Now, my caveats/complaints. A book that seriously considers AI must, I think, include the possibility of super-human AI as well. And Egan, like almost all other authors, conveniently leaves this possibility out. For example, in Permutation City there is an unexplained 17x slowdown of Copies relative to real time. In truth if the average Copy runs at a 17x slowdown, the millionaires among us would cobble together enough supercomputing power to run at a rate equivalent to real time. And the billionaires would have enough hardware to run laps around flesh-and-blood humans. I could easily envision a scenario where every company that doesn't have a management team of hyperspeed Copies would be left in the dust. But Egan tends to stay away from these kinds of unpleasant they-will-become-our-masters scenarios. (In another book of his called Diaspora, Egan does allow for faster-than-human robots called gleisners, but again assumes they will treat is well -- basically a variant of Asimov's stunted-AI). I would love to see Egan put on the Bill Joy hat and deal with superhuman intelligences fairly.

The second half of the book relies very heavily on the author's intriguing "Dust Theory". While I don't necessarily find the idea very compelling as a physical theory, it does touch on some ideas that could very well have validity, such as the notion that a universe will exist if it has internal mathematical consistency (the Platonic view to its logical conclusion). Unfortunately at some points in the story the Dust Theory feels like a cheap trick, a bit of magic that can push the story in whatever arbitrary direction the author desires. In this respect the plot is like a French art film: locally rational, globally irrational.

Despite the detractions, I enjoyed the book immensely and found the ending surprisingly poignant. Read it especially if you are intrigued by the notion of strong AI.

12 of 12 people found the following review helpful:

4.0 out of 5 stars Thick? Yes! Esoteric? Yes! Awesome? Yes!, July 22, 2005

By 

Evan Lapann "synthetic life-form" (Boston MA) - See all my reviews
(REAL NAME)   

This review is from: Permutation City (Mass Market Paperback)

I don't reccommend reading this if you have trouble grasping abstract computer concepts, you will be completely lost. On the other hand, if you're into transhumanism and virtual reality you will flip your lid over this book. It's very esoteric, specialised, detailed, thick, whatever you want to call it, but that is because Greg Egan has fully realised the technology he is writing about, and wants to convey his vision as clearly as possible. Personaly, I appreciate that. I hate sci-fi books with unexplained technology that just teleports a whole planet or mutates a cat simply because it's convenient to the plot, with little or no explanation. Greg Egan has thought out the technology in this book, and because of that, an incredibly "out there" story becomes feasible. However, if you don't care about technology and it's implications, you might feel gipped by this book. The characters are one dimensional, the writing is nothing special, the locations are foggy, but holy @#$%, my mind has been blown. Definately worth tracking down and reading.

33 of 39 people found the following review helpful:

3.0 out of 5 stars The book suceeds despite the first half, April 10, 2003

By 

Travis Cottreau (Wellington, New Zealand) - See all my reviews
(REAL NAME)   

This review is from: Permutation City (Mass Market Paperback)

This is my first exploration of Greg Egan's writing. I have to say, the first half was bad reading. It was Egan playing around with what kind of technology and software the future will have in 50+ years. It is done from a completely computer programmer's point of view, which was interesting enough, but tedious.

Another reviewer of a different Egan book said it was like a detective story where the main character is sneaking into a building to get clues and sees a bit of paper and goes into the history of paper production since its inception and what it will be like in the future. The information is irrelevant to the story and actually detracts rather than enhances.

Despite this however, I was really glad to get past this and into the 2nd half of the book. Egan gives a feeling of what true immortality might be like and what real loneliness is. I don't know if he intended to, but that's what I took away from this book. With a new type of virtual processor tucked away into its own little universe, untouchable by anyone, the virtual people can live forever, not just until the end of our universe, but really and truely forever. I've never seen it explored before, and find it a great idea. Even someone scared of death must be a little hesitant about the offer of true immortality, not just no aging, not just outliving your friends, but outliving everything in the universe. Billions and billions of years. Forever is a long time and I found it a bit daunting.

Another idea that I really liked in the book was concerning loneliness. What's it like to be really alone. Well, some of the characters find this out as they sneak into the artificial universe created for other characters, but they can never interact with it. No one can ever see them or talk to them. They are cut off not only from the world, the universe, but also the only other people who might understand their situation. I can't imagine the utter aloneness of their situation. Sure, they can create anything they want in their simulations of the world, but really - how far can your own imagination go? How much can you create without getting bored?

This is a good book that could have been great if it were re-mixed with the right concentration of existing ideas. It's worth reading for the ideas alone.

I hear that other Egan books are similar, so if you read this one, I can only imagine that you'd enjoy other Greg Egan books. I will certainly be reading more of them.