True, I would love to hope that most people are capable of logic. Mostly my argument in this case is to get them to concede that you cannot logically force someone to behave against their will. Every time they contradict that concession I hold their feet to the fire about it.

Common law, like we have in the US is completely borked. We can't both have a codified and clearly written code of laws, and also a system which is created through a compilation of case law and legal precedents. The best way to have a legal system is Civil law tradition of most of Europe (not to say that the current EU legal systems are good, they are just cut from a better cloth).