Right; it's based on the assumption (which I share) that laws aren't perfect, and that the prime way of finding out whether they are is by people breaking them.

Right; it's based on the assumption (which I share) that laws aren't perfect, and that the prime way of finding out whether they are is by people breaking them. The other requirement is the ability to change laws, otherwise this would indeed only enable selective (i.e. seemingly random) enforcement.