182 INFORMATION RETRIEVAL SYSTEMS Should such a system be used as a highly saturated empirical data bank through which a searcher (user) is enabled to project numerous maps? Do we need 'guides'? If so, how formalized need these be? Is this a non-normative heuristic ?
-> Heuristic 140, 141, 143, 150, 157; Projection system 296;
& Education 121; Heuristic 154; Information retrieval systems 183; Learning 213; Mapping 225; Pragmatics 276; Problematic 284; Thesaurus 353;
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