Another short novel, one recommended to me by Rodders: The Expert System’s Brother, by Adrian Tchaikovsky. Science fiction, set on a planet where earth settlers were abandoned long ago, despite the fact that all the flora and fauna on this world is naturally poisonous to humans.
But what do they eat then, you may ask? Why were they left in such a hostile environment? Both good questions. However, the computer systems on the spaceship (which still remains, although damaged) have devised various ways to sneakily inoculate humans to the toxins and allergens by changing their terrestrial-based body chemistry. And to guide the colonists and their descendants the ship created computer programs capable of possessing human hosts, and giving them the knowledge they will need to lead their communities, as lawgivers, doctors, and so forth. Unfortunately, over the centuries these programs (called “ghosts” by the humans, and “expert systems” by the computer) have stopped being advisors and have come to make all the big decisions.
This has allowed humans to survive and multiply and form communities, but the villagers live at a subsistence level, and their society has seriously regressed from that of their star-faring ancestors, so it’s all very much a mixed blessing. Humanity on this planet is stagnating. Being too dependent on the ghosts, the villagers for the most part have lost all initiative, creativity, or desire for innovation. Moreover, their lives are hard, uninspiring—and dangerous. The chemical changes that allow them to eat the local flora and fauna have also made it possible for the local fauna to eat them. There are large predators living not far from the village where Handry (the narrator and protagonist—brother of the village doctor) begins his story.
Because life is so hard and cooperation between individuals within the villages is vital to survival, anyone judged to not fit in (they steal, they refuse to work, or whatever the reason is) is sentenced to exile. But rather than just sending them away the computer systems have devised a more drastic and inhumane solution. Those adjudged useless or troublesome by the ghosts are “severed,” which involves being painted with a potion that soaks in and reverses their body chemistry so they are no longer immune to the poisons that surround them. They are then expelled from the villages, but what is much worse, because of the severing, they are doomed to either starve to death, or to die in some horrible way if hunger eventually drives them to eat the poisonous plants or animals.
Handry, though innocent of wrong-doing, is accidentally splashed with the “severing” being prepared for somebody else. The villagers make a frantic effort to scrub it off him, but it’s too late: some of it has soaked in. He is imperfectly severed, but that is bad enough. Much of what he touches or breathes causes allergic reactions. And though he can find things to eat, painful indigestion soon sets in, and the toxins from any particular food quickly build up to the point where whatever he’s been eating becomes dangerously inedible. So he is always hungry, always searching for food, and though the villagers haven’t banished him—yet—they do treat him as undesirable, and he fears they will eventually kick him out. Since he can’t bear the thought of being rejected by his beloved and hitherto loving sister (the ghost/doctor/expert system), he decides to leave on his own.
A lonely and difficult life follows, until Handry falls in with other outcasts from other villages, who—for one reason or another—have also been imperfectly severed. Their leader, Sharskin, is charismatic, but also ruthless and more than a little sinister. But Handry falls prey to Sharkskin’s charisma and becomes a loyal follower, inspired to perform violent acts against other humans. (To his credit, as the narrator looking back on his former actions, he neither excuses nor attempts to disguise what he has done or why he did it. Since he doesn’t offer excuses for himself, it is easier, as the reader, to find excuses for him.)
I read this book quickly, totally absorbed in Handry’s plight. The ending was somewhat open-ended and left questions unanswered, but still felt satisfying. The sequel may answer some questions, but as of now I don’t feel in a hurry to read it, since I found the end of this book a comfortable place to leave off.