Wild systems contain poisons. Formal systems are certainly poisonous, but lack the playfulness of, say, wild coyotes.
<blockquote><em>Coyote is the one who breaks the rules</em></blockquote>
We call this crucial difference the <em>Coyote Principle</em>. Stated most succinctly, it goes, "No matter how well you plan it out, Coyote will find some way to fuck it up." Like all poisons, the Coyote Principle is both a bane and a blessing. Sometimes, this principle is referred to as the <em>human factor</em>.