 What do you mean? We sent back the specimen ship. The animals are on Earth, too. But those specimens were in cages. Yes, but the next generation would be small enough to get out through the bars. They'll be running free in the cargoes of the spaceships. They'll land on Earth, and the first thing you know, a new mutation of rats will appear. They won't have any reason to connect it with the specimens from Glade. They won't be able to vermin-proof every building on Earth. No, we've got to stay here. We've got to study the animals here and find out how to beat them.