The largest problem with dealing with humans is handling both good and bad faith cases.
In particular, if you can't rely on the escalation path being willing to rule a lawsuit is "bloody stupid" if you offer, say, a discount on "all fruits" and someone tries to argue milk is a fruit, then you wind up with endless escalations of rules lawyering and perverse effects.
In particular, if you can't rely on the escalation path being willing to rule a lawsuit is "bloody stupid" if you offer, say, a discount on "all fruits" and someone tries to argue milk is a fruit, then you wind up with endless escalations of rules lawyering and perverse effects.