Have stress? Have anxiety? Have excess thoughts beclouding your frame of mind? You are encouraged to visit Sellumine. Sit on a bench and stare at the sphere that hovers atop city hall. Focus on what is stirring your mind. Ask yes or no questions, one by one- go down your long list. Sellumine will answer curtly and certainly, "yes", "no", "no", "yes", and so on. Sellumine's goal is to turn your mental burdens into physical actions- potential energy into kinetic energy. Of course, this is not a free service- Sellumine takes a small commission, since over eighty percent of Sellumine is powered by this process. And to Sellumine's benefit, this is quite the abundant source of renewable energy.