Appeals are rarely about what the law means. Most appeals are about whether the law was properly followed in the specific case at hand.

People are fallible. Just because something is simple and known doesn't mean that there won't be mistakes.

We have Javascript developers, and blog posts, and knowledge of APIs, but nobody would call Javascript complicated.

I've seen a lot of confusion about "this" in javascript, to the point of multiple articles making it to the front page of hacker news on the topic.

Law is like javascript, except every other word needs the same context and explanation that "this" requires.

Not only that, but disagreements about what something means is often a Very Hard Problem, and even when courts judge something one way or another, there are many people who _disagree strongly_, and hope to either change the judiciary, or change the laws to more explicitly favor their position. (This is, as far as I recall, how one is supposed to resolve disagreements about what the law _should be_ in our country.)

For example, many reasonable people disagree on whether the second amendment's wording is intended to mean that _everyone_ should be able to bear arms, or whether it's intended to mean _only people in a militia_, and there also seems to be some disagreement on what "arms" means. I can see how a reasonable person could interpret it in either way. Such disagreement seems to have been something which the founders themselves shared.

tl;dr: People disagree both on what we currently interpret words in law to mean, as well as on what the _intent_ was when it was originally written.

I've heard of much more successful people trying to teach themself JS and build something that trying to learn laws and defend themself in court.

And yet, yes, I'll argue that dev, in any language, is complicated.

Hell, there is a good part of the population that will consider assembling an ikea desk complicated. Let's not forget we are in the HN bubble here.