Lucas likewise made a powerful scrutinize of Keynesian exact models. He contended that estimating models in light of observational connections would continue to create similar expectations even as the hidden model producing the information changed. He upheld models in light of crucial financial hypothesis that would, on a fundamental level, be basically precise as economies changed. Following Lucas' scrutinize, new old style business analysts, drove by Edward C. Prescott and Finn E. Kydland, made genuine business cycle (RBC) models of the full scale economy.[13]