Why is it that virtually every major transport project built in the last decades in just about any part of the world has cost a great deal more than the original engagement, and served far fewer people than originally forecast? This pattern repeats itself time and again. Since the ones who end up holding the bag every time are the hard-working and apparently infinitely gullible taxpayers, it is possible to come to a conclusion. And that has to be that, up to now at least, we are terminally stupid, we fall for the same old trick every time. Why is that, and what are its implications for the quality of mobility services in your city and metro area? We invited Dr. Colin Black who is currently working to get a handle on these issues from an overall European perspective to share his thoughts with us.