Not knowing what you don’t know gives you an entirely different perspective of those already on the inside.
It’s very likely that you’ll want to break some essential rules.
This is the obvious problem and can lead to fairly disastrous outcomes.
However, it’s the established and accepted rules that aren’t actually essential that are the interesting ones to break.
While everybody on the inside is trained to trust these rules unquestioningly, if you don’t even know they exist, you’re the best candidate to break the mould and create something novel.