Out of all of the bad sequels to the Foundation trilogy, namely the Bear/Benford/Brin ones and Asimov's own attempts, this one probably comes nearest to standing on its own, in part because it wisely ignores the existence of all the rest of those terrible books, and it tries to give its own take on the concept of psychohistory instead of thinking up stupid new gimmicks like chaos plagues or living planets.

It opens several thousand years after the Foundation reunified the Galaxy, where psychohistorian Eron Osa has been sentenced to have his brain augmentation implant destroyed for an unknown crime. The action follows him and a few others as he tries to figure out what he did to have such a drastic punishment applied to him, and what's become of psychohistory after it "won" and the Interregnum is only a brief and distant memory behind the new Second Empire.

The book is largely decent. Kingsbury has renamed a bunch of stuff (e.g. Trantor is now Splendid Wisdon, Hari Seldon is the Founder, the Mule is Cloun-the-Stubborn, Kalgan is Lakgan, etc) presumably for copyright reasons, but it's not too hard to figure out what's going on. Eron Osa is an okay protagonist, somewhat in the mold of Golan Trevize from Foundation's Edge/Foundation and Earth, though luckily this book avoids mentioning anything that happened in those. As far as concepts go, there's some interesting stuff about the relationship between psychohistory and the determinism/free will debate, and also good investigation into if the dynamic of having Second Foundationers continuously pulling puppet strings from the shadows is actually stable or not. Kingsbury is probably right that they aren't in a stable equilibrium, and that an economist Illuminati whose efforts only work if no one knows they exist probably wouldn't be in business for very long.

Unfortunately the good bits are lost in a story that takes forever to go anywhere, and you miss Asimov's ability to say what he wanted to say in about 80 pages per time period and then move on. Easily the most irritating parts of the book are whenever Kingsbury gets cute with the state of historical knowledge in the year one zillion. Get ready to read lots of "funny" passages that the reader is supposed to chuckle at like "Democracy was invented by the slave Lincoln, who led a great revolt against his Virginian masters, forcing them to come down from Mount Ararat to grant his people the Magna Carta." And yet somehow the Second Empire has complete copies of works by people like Cicero, Max Planck, and Edward Gibbon (in a nod to the origin of the original Foundation trilogy), and they've figured out that Earth is the original planet of mankind, leading to some pointless scenes where Eron has to re-engineer a WW2-era bomber. What's the point of this stuff? Even worse, the cutesy history references are often placed in irritating sub-Dune-quality chapter epigraphs, which are never insightful and frequently long enough to noticeably slow down the book.

The original Foundation trilogy had a number of good features:
- Quick pacing
- Memorable characters
- A willingness to leave those characters behind as the story required
- Action and different scenery
- A then-clever concept of macroeconomists trying to prevent the fall of the Space Roman Empire
- Social commentary that was both apt and concise
- A sense of excitement and intellectual thrill

This book has some good extensions of Asimov's original ideas about civilizational dynamics, but like a number of other books, including some by Asimov himself, it's run into the problem that the original trilogy said so much with so few words that further works in this vein are basically pointless unless you happen to be both as smart as Asimov and without a trace of that fanfiction-y vibe that infests so many sci-fi sequels. Nice try though. ( )

If you read Asimov's Foundation and others in the Series-- this offering is a homage to that universe.

Kingsbury gives us a long deep dive into the future Society of a Foundation-like derived Galaxy thru the eyes of a few 'ordinary' denizens of this far-flung empire who get caught between the ruling Pscholars and a secretive rebel group of psycho-historians.

I give it 3 stars-- however it isn't a total downer...it flows with the same languid energy of the original Foundation. Very descriptive. Very intellectual. The main sin of the author is how he gives in to the desire to drown the reader in theoretical Psuedo-Science detail.

But if you are thinking of Battles filled with lightspeed dreadnoughts destroying entire star systems...uhm...no.

This Galaxy is utterly civilized. It's about Espionage spanning centuries using the tools of Psyho-Historical Analysis and warring Mathematics.

A Tome for Deep-thinking Sci-Fi readers who will be tickled by the notion of imagined social manipulation via esoteric formulae.

Let's just say, the story isn't very Flashy...but the characters are urbanely fascinating. You won't be impelled to finish this book in one reading...but it is very easy to put down--and then to pick it up again at a later time and continue where you left off... ( )

Although not directly related to Isaac Asimov's 'Foundation' series, 'Psychohistorical Crisis' clearly draws heavily on that series's background and you don't have to know much about Asimov's series to see where Kingsbury drew his inspiration from in this enjoyable look at the sort of soiety that might have evolved in the Foundationverse's Second Empire where the Second Foundation took power. It does drag a fair bit in places - particularly in the period where Eron spends time on Rith (Earth) and the story does flick between time periods relatively arbitarily - chapter headings do have date lines but as they're all First Empire, the differences between '14k and something' and '14k and something else' weren't always apparent :-) ( )

The dust jacket of Psychohistorical Crisis claims that Donald Kingsbury is following in Isaac Asimov's footsteps by just reusing psychohistory in the same way another sf author might reuse "the starship, the robot, the time machine." Indeed, the blurb goes on to indicate that Psychohistorical Crisis is about a man named Eron Osa trying to discover what crime he committed could be so heinous that he no longer remembers it. Nothing too Asimovian there, it would seem (or even psychohistorical).

But this is nothing more than marketing spin, probably designed to avoid the wrath of the Asimov Estate. Psychohistorical Crisis is, in fact, a very close sequel to Asimov's Foundation novels-- his original Foundation novels, as Psychohistorical Crisis ignores Gaia and the robots and anything else Asimov introduced in Foundation's Edge or later works. (Well, ignores them except for a couple jokes at their expense.) The book dodges copyright by substitution: "Splendid Wisdom" for Trantor, "Faraway" for Terminus, "Cloun-the-Stubborn" for the Mule, "Founder" for Hari Seldon, and so on. Once you get used to it, this actually works very well; it's easy to imagine that "Trantor" actually means "splendid wisdom," or that Terminus's name shifted in the two millennia since we last went there. It was the less clever ones that threw me out of the story every time they cropped up, like "Lakgan" for Kalgan. Really? That's not even trying.

Ignoring the copyright dodge, Psychohistorical Crisis is certainly the best Foundation novel to be published since Second Foundation. In fact, it's probably the best Foundation novel full stop. Asimov was great at introducing concepts, and he was great at scale, but Psychohistorical Crisis demonstrates that Asimov never really fully exploited psychohistory. For Asimov, psychohistory was primarily an avenue for his typical hard sf puzzle stories: given this social circumstance, what way would Hari Seldon have seen out of it? Later, this got more complicated: given psychohistory, what could knock it off track? what could you do to get it back on track? But fundamentally, the original trilogy, and to a lesser extent Foundation's Edge and Foundation and Earth, are all puzzle stories, not strongly interested in the how or why of psychohistory, just the what.

What occurred to me while reading Psychohistorical Crisis is that, weirdly, the Foundation stories were never all that interested in history. History is sketchy in those stories, and given that the Galactic Empire has been around for 12,000 years (and humanity has been in space for 50,000), there's actually not been that much of it. Psychohistorical Crisis is replete with history; references to fragments of past events abound, and history directly influences the decisions of almost every major character in readily explicable way. There's not just one galactic history, either, but Kingsbury draws attention to how different groups have their own histories, that may or may not connect to reality or other histories.

There were too many conflicting histories, a quantum ripple of alternate pasts. There were too many wars and too many intrigues and too many stars and too vast a span of time for one human... to comprehend. (374)

Asimov is often praised for his scale, but I think Kingsbury accomplishes more with it here than he ever did. Kingsbury is very interested in how we process and understand our own history. There's a repeated joke about how the characters are always getting the history of pre-spaceflight Earth wrong, which sometimes got on my nerves because I think that kinda thing's been done to death (we're told that Lincoln wrote the Ten Commandments, and that Dickens's London was Neolithic), but it fits into the project of the book as a whole. To my surprise, I was utterly captivated by chapters solely about how it is impossible by physical law to know all of history, or about how the Egyptians developed the measurement of time. (The appendix on this topic, however, is much less interesting.)

The key to what Kingsbury did, I think, lies in a passing reference to Thomas Kuhn's The Structure of Scientific Revolutions: "I've been plotting galactic patterns of scholarship. It is always the same curve. Flat, then a sharp increase, then flat again when knowledge matures. During the explosion, scholars always think the explosion will go on forever. They do not value what is known. Their pleasure is to seek new discoveries. During the mature phase, scholars always think that everything is known and see scholarship as the art of applying the known" (382). This pretty clearly maps onto Kuhn's ideas of "normal science" and "revolutionary science."

Kingsbury's genius lies in finding a "psychohistorical crisis." This is not a "crisis" in the Asimovian sense-- one predicted by psychohistory-- but in the Kuhnian sense-- the discovery of a point where a scientific paradigm no longer applies. Kingsbury found a point where psychohistory would break down, not because of external forces like a telepath or a hive-mind, but because of the tenets of psychohistory itself. And it's not even a real science! It is a puzzle story in that sense, I suppose, but it's one that's interested in what makes psychohistory work in a way that Asimov never was, I don't think.

In addition, Psychohistorical Crisis gives us interesting characters, a twisty plot, and fantastic worldbuilding. It's everything one could want out of a science fiction novel, and it deserves to be much more widely known. Both as a part of Asimov's universe (I can't believe it took me ten years to read it when I read stuff like Foundation's Fear right off because it was "authorized") and as an excellent work of science fiction in general.

When I found this book I could not resist ordering it. It is by the same man who wrote Courtship Rite. That book I enjoyed a great deal. This book is almost as good although heavier on mathematics than I especially like. Still, it is very much worth reading. The plot is a redefinition and extension of Isaac Asimov's Foundation series. If you liked that then you will probably like this book.

The book is well-written but dense with ideas and math concepts which, for me, had to be somewhat clumsily waded through. I recommend the book.