Pitfalls and problems

My originalthis paper was to take, from the literature, examples of successful solutions of practical problems found in using external information services. This would have been fine if there had been any examples in the literature, but there were none that I found. No one has said in print what happens when tapes are held up for three months in a dock strike, or how much it costs to re‐profile when the thesaurus is revised without consultation with the user, or how much extra work is involved when the record format is changed at short notice. No one has actually stated in public that he allowed two hours per profile and it actually required ten, or that the programming costs were three times as large as his (and his Computer Department Manager's) estimate. These things happen—but one naturally does not admit to them in print, even though by so doing one could be of inestimable value to one's professional colleagues.