Instead, Doncaster suddenly reveals that the Pluto colony was created by them as a stepping-stone to the stars, and that Earth will be left to go rancid, while "new men", like the rebuilt Sibley, conquer the universe.
In contrast, Doncaster unexpectedly discloses that the Pluto colony was established by them as a transitional base to reach the stars, and that Earth will be abandoned to decay, while 'new individuals', such as the rebuilt Sibley, conquer the cosmos.