Entire clades and species of space-going mechanoid had infested their lovely artificial globe. Some of the trespassers had built atmosphere generators and begun to create organic ecologies for their own purposes, like mould on a perfect fruit. (Some individuals swore that their bearings were never so luxuriously greased as by lubricants distilled from plants and animals.) Others had erected entire cities. Still others had begun the creation of artificial mountains and allied “geological” features.
“But—but—but this is abominable!” Trurl shouted. “We did not invite these parasites onto our world!”
“Yet they are here, and we must do something about them. We cannot take them back into the past with us. The results would be utterly chaotic! As it is, even our circumspect plans risk altering
