OCLC’s WorldCat approaches 475 million bibliographic records. Many of those records have been created manually by members of OCLC’s worldwide cooperative. Others have been added to WorldCat en masse from institutions large and small, from national libraries, from cultural heritage institutions, or from rural public libraries.
New technologies are raising also serious problems and concerns that do not seem to get satisfying answers. To come to some understanding of this phenomenon, we built a simple model of processes, driving the development of new technologies.