My favorite part is the kid using what he learns: For school, the kid goes on the streets of Toronto to raise money for cancer research. He notes that a homel

My favorite part is the kid using what he learns: For school, the kid goes on the streets of Toronto to raise money for cancer research. He notes that a homeless man has likely already found the most attractive location to raise money (near the subway). Then, he uses backwards induction to infer that the homeless man will leave if he begins collecting for a more worthy charitable cause in the same location.