The truth of the matter is that individuals' brains change as much as their bodies. This not just makes sense of why a similar man might be skilled at specific exercises and in reverse at others, yet in addition why a similar individual frequently shows limits of knowledge and idiocy, or of trying and hesitancy in equivalent circumstances.
It is quite important, in passing, that this conflicted with many people of old's thought process in regards to the idea of character, which most accepted was pretty much foreordained, and essentially step by step uncovered itself after some time. Polybius' intense consciousness of mankind's internal shortfalls, alongside his profound interest in brain research, additionally delivered him ever aware of trying not to capitulate to his own feelings or predispositions in his examination. For sure, the Achaean persistently focuses on the requirement for students of history to grapple with their own normal positive energy and inclination. Furthermore, as certain classicists have properly noticed, he likely could be the primary Greek historiographer 'to request that students of history transcend the affection for their own urban areas.'
Second, Polybius merits perusing for the complexity of his staggered investigation of causation, most outstandingly for his accentuation on the requirement for experts to figure out how to separate between an extraordinary power struggle's prophasis [πρόφασις], its basic guises or reasons, and its aitia [αἰτία], its a lot further hidden causes. While looking for clarifications or allotting fault for such fear fires, the political antiquarian should be clear-peered toward, careful, and constant chasing truth: dismissing stingy hypotheses, warily weighing contending clarifications, and jumping with shameless relish into the wandering intricacies of strategic history. It was this blend of moral impartiality and savvy instinct that so charmed Polybius to simply war scholars, for example, Hugo Grotius, who, in the seventeenth century notably depicted him as the principal student of history to lay out obvious differentiations between an exemplary reason for war and only a powerful contention. There is an intrinsically criminological quality to the investigation of causation, contends Polybius, with his regular work of the clinical illustration — typical in Greek historiography since Herodotus — and his ideas that his work is likened to that of the faithful doctor: