Philip K. Dick Award: Best Novel winner (1982).
It was Cobb Anderson who built the "boppers" – the first robots with real brains. Now, in 2020, Cobb is just another aged "pheezer" with a bad heart, drinking and grooving an the old tunes in Florida retirement hell. His "bops" have came a long way, though, rebelling against their subjugation to set up their own society an the moon. And now they're offering creator Cobb immortality but at a stiff price: his body, his soul... and his world.