PrD requires us to learn from failing. Thinking we’ve got our story right and working to confirm that story creates opportunity costs. When we believe too much in our own stories, we are unaware of the wealth of insights obtained by watching our ideas fail. Thinking in this fashion is counterintuitive. We don’t normally try to prove ourselves wrong. To embrace self-doubt requires overcoming our cognitive biases. It also requires changing the way we approach our artifacts and engagement with external stakeholders. Failure breeds constructive experimentation, leading to insight and innovation. Believing our own stories and insisting we’re right preempts such discoveries from occurring.