In the long run, it's pretty difficult to convince a business that something makes money if the money doesn't actually show up. 1. In the long run, everyone in

In the long run, it's pretty difficult to convince a business that something makes money if the money doesn't actually show up. 1. In the long run, everyone involved has moved on to other positions. 2. If the money doesn't show up, that just means you're doing it wrong. Like all the various software methodologies that are supposed to increase productivity or reduce bugs. 3. "Half of money spent on marketing is wasted, it's just impossible to know which half." The real world is rarely simple enough to give the kind of clear results you'd get from a proper well-designed experiment.