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Thus , in terms of information seeking as behavior , people operate in two general modes - - sampling and selecting ( Figure 4 , a , c ) or passive absorption ( b , d ) . Complex skills or large bodies of information are broken into parts , which are taught systematically according to a planned sequence . For nearly 50 years , and now in over 60 countries around the globe , mothers gather at monthly meetings with accredited LLLI Leaders for information and support . We now have many diverse and extensive bodies of information on issues of limited focus ( e.g ., health care ) . A relative pathname , in contrast , must be interpreted in terms of information taken from some other pathname . As human beings who are concerned about privacy and security , there are really two bodies of information we have in us that are our private information . If we think about real-world searching , the size of the domain has a very important impact on searching ; specifically , different search techniques are appropriate for differently-sized bodies of information , regardless of ring . In this section we consider a well-known framework for analyzing visualizations and other information interfaces , information foraging theory.21 Based on an analogy with strategies used by animals foraging for food , this theory describes how people navigate when searching for information . What we hope to achieve is a practical , practitioner-oriented guide , which explains how to design successful architectures for information systems and to see these through to their successful implementation .