very true. which is why i wrote the words in the parentheses. The difference between historical records you refer to as instinct and human records is that instinct is "one to one", whereas human communications are one-to-many, in fact often one-to-all when the communication is important enough, or deemed so. So with instinct, if all those individuals who hold the knowledge die, or are excommunicated somehow, the knowledge is either lost or confined to one group. With technological histories the knowledge is made, at least in theory, immortal.