"R-4 got stuck on the First Law. "Can anyone really protect a human being from all harm whatever?" it thought. "No. It is inevitable that all humans must be injured, contract illnesses and ultimately die. The future can only be averted for humans who are already dead. Ergo..." It took a dozen cops to subdue R-4, after his blood orgy in a department store (83 dead, none injured). "
— John Thomas Sladek