MONO91 Appendix B: Progress and Prospects in Mechanized Indexing appendix Mary Elizabeth Stevens National Bureau of Standards He may provide a standing-order interest profile with respect to patterns of his own selection criteria, with weighting indications as to relative degrees of interest. Dynamic re-adjustments to standing requests and weightings can be made in accordance both with his responses to notifications and with any more -like-this1 requests received from him. System accounting and usage statistics can provide a feedback warning system as to the adequacy of his selection-criteria set and enable him to initiate re[OCRerr]processing of those documents in the collection likely to be of current interest to him. We must close, however, with a caveat: if machines have not yet mastered us, neither have we yet the requirements of the machine to the degree of advanced planning that will be required, especially for those information processing operations involving the analysis of content and not merely the manipulation of records: for here we are faced with the great challenges of human communication, human decision-making, and human[OCRerr]problem-solving. Z3Z