Gardener: "What worries you so much, Mr MCBoss?" MCBoss: "I'm not sure. I forget."
Experimentee: "Oh. It probably had to do with something negative. I fixed his brain so he stops doing negative or selfish stuff." MCBoss: "I really think I'm worried about something." Gardener: "I wouldn't worry about it if it's something negative. That stuff can really make it hard to celebrate!"
