A case referring to the beneficial use of the expert systems in the health sector was the attempt of the LDS Hospital in Salt Lake city,Utah to build “ the most complex artificial intelligence system ever created” according to the words of DR David Classen.Its name was AIC or “Antibiotic Computer Consultant” and it was part of HELP(Health Evaluation through Logical Processing), which was LDS’s hospital information system. The latter was existed, before the implementation of the Expert System. The role of AIC was to help doctors determine proper antibiotic treatment for specific patients.Achieving the specific purpose,the Exp