BUSINESS IS EASY capitalizes on the trend for shorter, more digestible lessons (TED Talks, the rise of book summary services, etc.) and the novelty market for business books. It uses a short sentence to remind business professionals of what they might already know and likely don't do as often as they should. Business truisms like, "Hire slow, fire fast;" "If you're the smartest person in the room, you're in the wrong room." On the opposite page...