If there are clear boundaries, there would be no need for interpretation. Interpretation is needed to resolve questions that arise because the boundaries are not clear.
> If there are clear boundaries, there would be no need for interpretation
You can't prosecute someone for murder just for insulting you. You can't prosecute someone for robbery if all they did was jaywalking. Media laws have clear boundaries sufficient for legal professionals to do their job. Building codes have clear boundaries sufficient for legal professionals to do their job.