A heuristic ( / hjʊˈrɪstɪk /; from Ancient Greek εὑρίσκω (heurískō) 'method of discovery', [1] or heuristic technique ( problem solving, mental shortcut, rule of thumb) [2] [3] [4] [5] is any approach to problem solving that employs a pragmatic method that is not fully optimized, perfected, or rationalized, but is nevertheless "good enough" as a...