"Beautifully written."—Publishers Weekly, starred review The martial Sainnites have occupied Shaftal for fifteen years. Every year the cost of resistance rises. Emil, an officer and scholar; Zanja, a diplomat and last survivor of her people; and Karis, a metalsmith, half-blood giant, and an addict, can only watch as their country falls into lawlessness and famine. Together, perhaps they can change the course of history. Laurie J. Marks' first two Elemental Logic novels (Fire Logic and Earth Logic) both won the Gaylactic Spectrum Award and received multiple starred reviews. She lives in Boston, Massachusetts, and teaches at the University of Massachusetts.

"Marks is an absolute master of fantasy in this book." --Booklist (starred review) Earth * Air * Water * Fire These elements have sustained the peaceful people of Shaftal for generations, with their subtle powers of healing, truth, joy, and intuition. But now, Shaftal is dying. The earth witch who ruled Shaftal is dead, leaving no heir. Shaftal's ruling house has been scattered by the invading Sainnites. The Shaftali have mobilized a guerrilla army against these marauders, but every year the cost of resistance grows, leaving Shaftal's fate in the hands of three people: Emil, scholar and reluctant warrior; Zanja, the sole survivor of a slaughtered tribe; and Karis the metalsmith, a half-blood giant whose earth powers can heal, but only when she can muster the strength to hold off her addiction to a deadly drug. Separately, all they can do is watch as Shaftal falls from prosperity into lawlessness and famine. But if they can find a way to work together, they just may change the course of history. "A work that is filled with an intelligence that zings off the page."--Publishers Weekly (starred review)

The final novel in the acclaimed Elemental Logic series finds Karis G’deon and her sprawling family once more imperiled, this time by the legacy of violence that threatens to unravel the fragile peace they have woven across their land. Laurie Marks’ Elemental Logic series introduced readers in Fire Logic to the realm of Shaftal, an intricately imagined land whose people operate within the boundaries of their basic natures—here defined as logics—which sometimes bequeath them with access to magical, elemental powers and sometimes embroil them in unsolvable internal conflicts. In Air Logic, Karis and those who love her must figure out, in the aftermath of war and an assassination attempt, how to bring together Sainnites and Shaftali in a country where old wounds and enmities fester and Air magic conceals the treason hidden in the heart of the G’deon’s household. When Medric is taken hostage to force Karis’s hand, a strange boy will guide Zanja to the place where she may yet save him. A mother must remember the son she has been made to forget, and Air children will find what their place in the world may yet be.

The second book in the Elemental Logic series, Earth Logic continues the story from the perspective of Karis, a complex character born of magic and now ruler for the country of Shaftal. Karis is a woman who can heal the war-torn land and expel the invaders, but she lives in obscurity with her fractious found family. With war and disease spreading, Karis must act quickly. And when Karis acts, the very stones of the earth sit up and take notice. “Another stunner of a book. The powerful but subtle writing glows with intelligence.” —Booklist

The Elemental Logic series continues with its third novel in the series, Water Logic, where the patterns of history are made and unmade. Laurie Marks’ Elemental Logic series introduced readers in Fire Logic to the realm of Shaftal, an intricately imagined land whose people operate within the boundaries of their basic natures—here defined as logics—which sometimes bequeath them with access to magical, elemental powers and sometimes embroil them in unsolvable internal conflicts. Readers will discover inside Water Logic that amid assassinations, rebellions, and the pyres of too many dead, a new government has formed in Shaftal—a government of soldiers and farmers, scholars and elemental talents, all weary of war and longing for peace. But some cannot forget their losses, and some cannot imagine a place for themselves in an enemy land. Before memory, before recorded history, something happened that now must be remembered. Zanja na’Tarwein, the crosser of boundaries, born in fire and wedded to earth, has fallen under the ice. Now, by water logic, the logic of patterns repeated, of laughter and music, the lost must be found—or the found may forever be lost.

In the 1970s, while their contemporaries were protesting the computer as a tool of dehumanization and oppression, a motley collection of college dropouts, hippies, and electronics fanatics were engaged in something much more subversive. Obsessed with the idea of getting computer power into their own hands, they launched from their garages a hobbyist movement that grew into an industry, and ultimately a social and technological revolution. What they did was invent the personal computer: not just a new device, but a watershed in the relationship between man and machine. This is their story. Fire in the Valley is the definitive history of the personal computer, drawn from interviews with the people who made it happen, written by two veteran computer writers who were there from the start. Working at InfoWorld in the early 1980s, Swaine and Freiberger daily rubbed elbows with people like Steve Jobs and Bill Gates when they were creating the personal computer revolution. A rich story of colorful individuals, Fire in the Valley profiles these unlikely revolutionaries and entrepreneurs, such as Ed Roberts of MITS, Lee Felsenstein at Processor Technology, and Jack Tramiel of Commodore, as well as Jobs and Gates in all the innocence of their formative years. This completely revised and expanded third edition brings the story to its completion, chronicling the end of the personal computer revolution and the beginning of the post-PC era. It covers the departure from the stage of major players with the deaths of Steve Jobs and Douglas Engelbart and the retirements of Bill Gates and Steve Ballmer; the shift away from the PC to the cloud and portable devices; and what the end of the PC era means for issues such as personal freedom and power, and open source vs. proprietary software.

By water logic, a cow doctor becomes a politician. A soldier becomes a flower farmer. A lost book contains a lost future. The patterns of history are made and unmade. Amid assassinations, rebellions, and the pyres of too many dead, a new government forms in the land of Shaftal--a government of soldiers and farmers, scholars and elemental talents, all weary of war and longing for peace. But some cannot forget their losses, and some cannot imagine a place for themselves in an enemy land. Before memory, before recorded history, something happened that now must be remembered. Zanja na'Tarwein, the crosser of boundaries, born in fire and wedded to earth, has fallen under the ice. Now, by water logic, the logic of patterns repeated, of laughter and music, the lost must be found--or the found may forever be lost. Laurie J. Marks teaches at the University of Massachusetts Boston. She is the author of five previous novels, and her first two Elemental Logic novels (Fire Logic and Earth Logic) won the Gaylactic Spectrum Award and received multiple starred reviews. She is a recipient of the Fairy Godmother Award (James D. Tiptree, Jr. Award) and a founding member of Broad Universe.

Provides an essential introduction to classical logic.

A collection of seventy illustrated logic puzzles set in fantastic locales such as outer space or mythical kingdoms, with explanations of the logical reasoning needed to solve them. Includes charts, grids, diagrams, a section of clues and an answer section.