VHE SHOULD GO BACK, he knew. Without the tracker, he didn’t have a chance. The odds were now with the Cytha—if, indeed, they had not been with it from the very start. Unkillable? Unkillable because it grew in intelligence to meet emergencies? Unkillable because, pressed, it could fashion a bow and arrow, however crude? Unkillable because it had a sense of tactics, like rolling rocks at night upon its enemy? Unkillable because a native tracker would cheerfully kill itself to protect the Cytha? A sort of crisis-beast, perhaps? One able to develop intelligence and abilities to meet each new situation and then lapsing back to the level of non-intelligent contentment? That, thought Duncan, would be a sensible way for anything to live. It would do away with the inconvenience and the irritabili