"How smart's an AI, Case?" "Depends. Some aren't much smarter than dogs. Pets. Cost a fortune anyway. The real smart ones are as smart as the Turing heat is willing to let 'em get." "Look, you're a cowboy. How come you aren't just flat-out fascinated with those things." "Well," he said, "for starts, they're rare. Most of them are military, the bright ones, and we can't crack the ice. That's where ice all comes from, you know? And then there's the Turing cops, and that's bad heat..."