Research abstract: Approaches to long-range forecasting

The Proceedings of the 3rd Symposium on Long-Range Forecasting and Planning contain the papers that were presented and the discussion of those papers. The discussion was recorded during the Symposium and has been edited to clarify the speakers' meaning. However, during the editing process a conscious effort was made to retain the flavor of free discussion that marked the Symposium. We feel that the interchange of information and opinion during the discussion adds significantly to the formal presentations and we hope that both the papers and the discussion will prove to be of benefit to all those concerned with methods of long-range forecasting and planning. The reader should remember that the opinions presented by the speakers, particularly during the discussion, are their own and do not necessarily represent the official position of their organizations.