Laszlo: They're divided into two groups: high intelligence and low intelligence. The low intelligence are taken, become Pig Slaves like me.
Tallulah: That's not fair! You're the smartest guy I ever dated!
The Doctor: And the others?
Laszlo: They're taken to the laboratory.
The Doctor: Why, what for?
Laszlo: I don't know. The masters only call it the Final Experiment.