When people get together in one place, it's only a matter of time before they start drawing lines. And when God gets people together in one place, he turns the line-drawing dial to eleven.
Leviticus is putting things in order from its first chapter to the last. In fact, this seemingly endless stream of laws is what gives Leviticus its (undeserved?) reputation as the most boring book in the Bible.
But is there a deeper creative madness to the method?