I think control systems are one of the most important, least understood, and least examined aspects of management that we have today. Most companies tend to accrete their control systems, whether on the financial, production, or sales side. So over time you get hundreds of these systems. If you ask companies how many control systems they have, they don’t know. If you ask them how much they’re spending on control, they say, “We don’t add it up like that.” If you ask them to rank their control systems from most to least cost-effective, then cut out the 20 percent at the bottom, they can’t.