Was having a debate with some friends about the instinctual nature of sex. Is there any record in history to win humans understood that sexual intercourse led to the production and development of a infant? Or does this notion pre-date any sort of recorded history.
Here is a great article by anthropologists Anne Buchanan and Holly Dunsworth examining that exact question. They show that the knowledge of where babies come from is very ancient and argue that it is an important element of what makes humans unique.
better question for r/askanthropologists