Re: George and Gracie
I always assumed the whales explained to the Probe exactly what had happened and how it might take awhile to rebuild their population. The Probe left Earth right after talking to them, so I guess it was satisfied for the moment. If it hadn't been, it would have proceeded with its plan to destroy the planet.
It is by caffeine alone I set my mind in motion. It is by the beans of Java that thoughts acquire speed, the hands acquire shakes, the shakes become a warning. It is by caffeine alone I set my mind in motion.