Model
Externalities
quote
All these unintended consequences we've been talking about have a name from economics: externalities, which are consequences, good or bad, that affect an entity without its consent, imposed from an external source. The infant who cannot be vaccinated, for example, receives a positive externality from those who choose to vaccinate (less chance of getting the disease) and a negative externality from those who do not (more chance of getting the disease).
From
Chapter:
Anything That Can Go Wrong, Will
Section:
Harm Thy Neighbor Unintentionally
