Funny, I've not had a day's worth of law school, but it's rare that I find a bill, law, legal brief or opinion that I don't understand at least at some level. Access to any of the case references often helps quite a bit. In other words, it's not anything more than reading comprehension just like we've all been doing since the 1st grade.

Legal documents are written in thick, complex language for a reason. The reason is to make it possible for judges to later infer legislative intent when interpreting laws later. Law written in loose language often cause us all problems later. See Jaynes v. Commonwealth of Virginia as a classic example; in that case the Virginia Legislature passed a law that forbid "false" routing information on email as opposed to "fraudulent" routing information. The difference in the two terms led the judge to conclude that the use of false information was akin to hiding one's identity as opposed to the real goal of shifting the blame onto an innocent third party.

Well, our legal system is built upon 1000 years of case law, logic and legislation. As most lawyers will tell you, law school is less about learning the law than it is about learning logic of how law is constructed and how to find references (case law) to support your theory of a case.