This is a lecture on the history of thought, with modern day connections in the systems field. The paper is a description of the contributions of 23 persons to the development of systems thinking and the slides are photographs of these systems thinkers. "Second Order Thought" is the theme of the paper, Warfield used this paper as the basis for a lecture at a meeting the Washington chapter of American Society for Cybernetics. The meeting chairman was Prof. Stuart Umpleby of George Washington University faculty and the meeting place was in a building in Washington, D.C. on the GWU campus.

This 29 October 2005 presentation has been confused with a different slide presentation which Warfield had presented six years earlier on October 22, 1999*, for a meeting in Washington D.C, at George Washington University. The two presentations had similar titles, but different content. The 2005 talk given by Warfield is in Box 94, Folder 25. The October 1999 talk is in Box 21, Folder 36. But due to the similarity in titles between the 1999 and 2005 papers, it could be that Box 21, Folder 36 has all copies. Or maybe Box 94 has all copies.

*The 22 Oct 1999 paper is titled The Evolution of Thought About Thought: From Aristotle to Foucault. The 29 Oct 2005 paper is titled Thought About Thought: Twenty-Four Centuries of Now-and-Then Development and the Consequences.

R.W. 12/10/2012