People Who Tricked the System!

Do you think people who evade the law and take advantage of loopholes in the system are criminals? Or bad people who are trying to make a profit at someone else's expense? Sorry to disappoint you, but sometimes they are just smart resourceful people who find profit where it seemed impossible thanks to their ability to think outside the box. And there are many stories in the world that prove this. So who are these people, who have tricked the system, and what can we learn from them?