A couthouse has walls. A court is something different. Even a vernacular definition, i.e. not from a legal dictionary, shows this. "court (noun) 1. a body of people presided over by a judge, judges, or magistrate, and acting as a tribunal in civil and criminal cases" It is possible to establish your own court, with its own rules, before a judge. I read a case where the defendant did so, and the ignorant prosecuting attorney agreed to it. The judge understood what was going on, and the defendant ran circles around the prosecutor. If you want to understand natural law/common law, it will benefit you to learn the definitions related to it. A court is not a physical space.