The document discusses supplier selection criteria over time. It notes that the main goals of supplier selection are to reduce costs, achieve real-time delivery, ensure quality, reduce risks, and receive better service. Common historical criteria from 1966-2012 were quality, delivery, price, organization's reputation, and technical capability. More recent criteria include technology, payment terms, manufacturing challenges, and personnel capability. The document also lists various methods that have been used for supplier selection, such as data envelopment analysis, mathematical programming, the analytic hierarchy process, and fuzzy set theory.