About John Stewart John Stewart, director of policy and research at the Canadian Nuclear Association, spent twenty years as an economist and manager inside the US embassy in Ottawa. Books by John Stewart Strangers with Memories The United States and Canada from Free Trade to Baghdad by (author) John Stewart Enaction Toward a New Paradigm for Cognitive Science edited by John Stewart, Olivier Gapenne & Ezequiel A. Di Paolo Thomas F. Walsh Progressive Businessman and Colorado Mining Tycoon by (author) John Stewart