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Title: The 'UNDO' Command
Review: Hiding in their bunkers beneath a blasted world, the inhabitants of Sirgol are still not defeated. They have a unique colony world; their civilization is as old as Earth's, since Sirgol is the only planet known where time-travel can happen, and the first colonists dropped back thousands of years. Now the berserker machines have found them, and almost beaten them by scouring off the surface of their world, but the Sirgolians still have a chance as they fight the machines through the loops and bends of their planet's earthlike history. And on Sirgol, you can really go back and make it not happen. Saberhagen's berserkers are always a scary concept, but here they have a different side. It's a question critical to my own survival: how complicated can a machine be before it can be said to be 'alive?'
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