There have been two great accidents in my life. One was the trolley, and the other was Diego. Diego was by far the worst.
We don't see very far in the future, we are very focused on one idea at a time, one problem at a time, and all these are incompatible with rationality as economic theory assumes it.
And I'd say one of the great lessons I've learned over the past couple of decades, from a management perspective, is that really when you come down to it, it really is all about people and all about leadership.