According to Sen. Dianne Feinstein (D-Calif.), we need regulation before drones are allowed to take to American skies. She says that what regulators must consider is, "When is a drone picture a benefit to society?" And there's the rub. For many, it is entrepreneurs who must first demonstrate that new technologies are beneficial to society before they are allowed to use them. It's an inversion of a basic tenet of liberty that has served common law countries well: everything which is not forbidden is allowed. It is regulators who should prove that a technology causes real harm before restricting its use.