Black Swans and Gray Rhinos are constant risks that can be made worse May 04, 2021 Steve Kelman, who led the Office of Federal Procurement Policy during the Clinton Administration and is a current professor at the Harvard’s John F. Kennedy School of Government, has a reputation as a big thinker about management and government and why things work the way they do. In this conversation with Editor Nick Wakeman, Kelman shares his thoughts about Black Swans and Gray Rhinos -- those often traumatic events that we either didn’t see coming or we knew could happen but we failed to prepare for.