At some level, laws inherently have to be up for interpretation, and operate on some level of abstraction above the intimate details - because virtually everything in life is a spectrum, including the applicability of a given law. In the “fringe zone” in which it's not clear whether a law applies or not, judges have to resort to individual judgement on a case-by-case basis.

This is not something that's new or unique to technology, although technology does a fantastic job of illustrating the difference between a legal problem and a technological problem - as well as the different mindsets you have to approach both with.