Obviously the people wouldn't actually think that smashing parking meters to renege on a contract is a good idea, but, as we said, if they thought it was a good

Obviously the people wouldn't actually think that smashing parking meters to renege on a contract is a good idea, but, as we said, if they thought it was a good idea then it wouldn't matter if the contract states something about not smashing meters. There would be nothing to enforce the contract. It is not upheld by a supernatural force.