Product managers spend too much time thinking about ROI and not enough time thinking about their product’s chances of survival. Most tech product fail but we act like our job is to ‘roadmap’ which success will come first. A more pessimistic approach which focuses on the threats to success rather then the business case will give our product the best chance of staying alive or at least an early and dignified death. And it will help keep the expectations of our bosses, investors and other stakeholders in check. I’ll be making a serious point but with a light-hearted presentation drawing on an analogy from Indiana Jones and the Temple of Doom.