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spec: Much of what is written about users ' needs for information is speculative that is , the author speculates about what would or would not be useful to users , not testing the speculative ideas with empirical data or with direct observations or otherwise working with users . When using such a procedure , it can be useful to explain it beforehand , when describing the kinds of questions one is proposing to ask . The kind of skills that we observe them acquiring during our experiment will later be useful to them in the same way as something that they would learn from a book or a lecture . It might involve converting fully participating interests in the profits and losses of the partnership ( `` Common Interests '' ) into purely limited participation interests ( `` Preferred Interests '' ) , and vice versa . Consider an index on a table on which a lot of DML has been performed . '' We're trying to exercise the fundamental responsibilities of our democracy . Add to that a mountain of paperwork and meetings , queries and complaints from parents , playground and lunchtime duties , and you have the potential for a huge amount of ... You wish to be useful to them . The film , Breakwater Elvis , will be edited on the Xpress Pro HD and Leckelt is in discussion with Avid Hamburg over a HD laptop system , as the crew will be spending a month on location .