The point is, is that the words of the statutes are king, and the words of the Constitution trump all. When judges are activist, if there is "ambiguity" in the words in a particular factual context, then the courts "refine" the meaning of the statutory and Constitutional words. But where statutes are silent, as in much of the lacunae of contractual law, for example, prior judicial precedents really matter, and legal practioners rely much more on the case law than the statutes. Without my training to parse case law, I would be largely useless as a legal practioner myself. It is not a simple task often.
Very true. The common law isn't static.