I often argue with attorneys and they say, "who went to law school?" I reply, law school consists of a lousy three year program. A lawyer planning on going into criminal law takes the same courses as a bankruptcy attorney. They usually have one 3 month course once or twice a week in criminal law and the same for constitutional law.
Bottom line is anyone can read a statute, anyone can read a judicial case interpreting the statute, and nobody can predict what the judge will do since he's just another lawyer in a robe, albeit one scared of making the prosecutor mad.