The trader's market consists of smart money, and fools money, and almost infinite gradations in between. No matter how smart you are, or think you are, there are people smarter or more corrupt than you, that can take your money out of your account and into theirs. Maybe not all at once, but inexorably with few exceptions the flow is in their favor. When I think of corrupt, I think of the former lib/dem/socialist Governor New Jersey of John Corzine. He "lost" 5 billion of his investor's money. Not only will he get off scott free, he will not be fined, and be able to keep all of the compensation he was unfit, and totally unqualified to retain.