birth itself is a painful expierence that results in a lasting trauma. People can remember words spoken during their birth after uncovering it the same way as another blotted-out memory, such as childhood sexual abuse.
a human baby at birth has certain conditioned responses. For example the dilation of the pupils when exposed to a bright light and the reflex to burrow into the fetal position.
this is seemingly the same process as the pre-programmed, instinctual behaviour of animals. Turtle goes to the sea and has some inbuilt knowledge of survival
If you have a dualistic view, above describes the body, but the mind is different then you'd have to explain archetypes. Word by jung. Universal images that are seemingly inbuilt in every human and can get triggered. The stuff of legends. For a proper confirmation you'd need a large amount of feral wolf-boys, but given that these images are found in the highlands of new guinea, which have been isolated from the rest of the world for about 100k years, its effectively proven.
what exactly is expierence based and what is inbuilt has to be studied on a case by case basis. Most expierence based things have an inbuilt element to them. A certain expierence flips on a switch for an inbuilt system. Abused dog syndrome for example.
