I find this entire field of study fascinating. The reason is simple; ever since the start of the Scientific Revolution everything has become quite complex and multivariate and we have gotten into the habit of trying to solve them all using mathematical models. This has the advantage that once proven, it can be applied "mindlessly" towards a desired result. With Heuristics so many factors have to come together in a individual for any given event that repeatability is not certain. Therein lies the difficulty.