even with already published laws you need a lawyer to understand how a judge will be more likely to interpret them; even then, it's just an informed guess, you never know what the end ruling will be until it comes.
I’m not sure this is a good metaphor, but I think the main thrust should be true: the whole thing is adversarial like you’ve never seen, and that’s not at all the best way to establish truth, just the best you can do without trust assumptions. (Law : science and engineering :: democracy : benevolent dictatorship.)
For example, in the US, you have y things like https://en.m.wikipedia.org/wiki/Office_of_the_Legislative_Co... which helps the house draft bills.