Actions speak louder than words, so asset managers should measure client behavior to focus their organization on what matters most (which is whether or not clients buy, stay, or buy more), and what you can do to stimulate client behavior. In contrast, humans are tricky creatures, so you cannot rely fully on what they say. This makes actions, not words, the reliable indicator of demand and, therefore, it makes client behavior data the perfect business intelligence: meaningful, commercial, and professional.