Many of the biggest challenges that we face in society are due to one or both of these types of problems: (A) Collective Action Problems, where many individuals or groups are currently better off taking action X, even though they'd be better off in the long-term if everyone agreed not to take action X. Some of the big challenges with Collective Actions Problems are (i) getting people or groups to agree to stop the behavior in the first place, and then (ii) creating a v...