Namesake ping.
Polybius brought up this point in his Histories, Book XXXVI, when he discussed when historians should not attribute certain calamities of society to the work of Fate or Chance or the Gods.
Polybius noted that, for example, a natural disaster such as a flood from heavy rains or a drought could be attributed to Fate or a god for lack of a better explanation.
However, Polybius observed that the explanation for many of the calamities that certain communities suffered from needed no further explanation than the examination of the behavior of the people in those societies.
"Now indeed as regards things the causes of which it is impossible or difficult for a mere man to understand, we may perhaps be justified in getting out of the difficulty by setting them down to the action of a god or of chance, I mean such things as exceptionally heavy and continuous rain or snow, or on the other hand the destruction of crops by severe drought or frost, or a persistent outbreak of plague or other similar things of which it is not easy to detect the cause. So in regard to such matters we naturally bow to public opinion, as we cannot make out why they happen, and attempting by prayer and sacrifice to appease the heavenly powers, we send to ask the gods what we must do and say, to set things right and cause the evil that afflicts us to cease.
But as for matters the efficient and final cause of which it is possible to discover we should not, I think, put them down to divine action. For instance, take the following case.
In our own time the whole of Greece has been subject to a low birth-rate and a general decrease of the population, owing to which cities have become deserted and the land has ceased to yield fruit, although there have neither been continuous wars nor epidemics. If, then, any one had advised us to send and ask the gods about this, and find out what we ought to say or do, to increase in number and make our cities more populous, would it not seem absurd, the cause of the evil being evident and the remedy being in our own hands?
For as men had fallen into such a state of pretentiousness, avarice, and indolence that they did not wish to marry, or if they married to rear the children born to them, or at most as a rule but one or two of them, so as to leave these in affluence and bring them up to waste their substance, the evil rapidly and insensilby grew. For in cases where of one or two children the one was carried off by war and the other by sickness, it is evident that the houses must have been left unoccupied, and as in the case of swarms of bees, so by small degrees cities became resourceless and feeble.
About this it was of no use at all to ask the gods to suggest a means of deliverance from such an evil. For any ordinary man will tell you that the most effectual cure had to be men's own action, in either striving after other objects, or if not, in passing laws making it compulsory to rear children. Neither prophets nor magic were here of any service, and the same holds good for all particulars."