Tina: You need to clean the break room refrigerator more often. Wally: We're engineers. We only do the highest priority tasks. Tina: Mold started to grow in there. Wally: That's no big deal. Tina: Bacteria caused the mold to mutate. Wally: So what? Tina: It rapidly evolved into a sentient being fueled by forgotten lunches. Then it learned language skills and got a job in Human Resources. It plans to frame you for viewing inappropriate websites at work and then fire you. Wally: This sort of thing usually works itself out.