Melon Hunter said:
It was probably understood many thousands of years ago through simple deduction and observation of animals. What took longer to figure out was effective contraception, I reckon.
Most likely this. For some reason people think nowadays that we're the smartest humans ever to live.
Funny enough, that's what every society thought.
In any case, Homo Sapiens always had the same capacity for learning, reasoning and logic. It doesn't take a genius to figure out what action is responsible for a certain action, especially if there is only 1 possibility.
thaluikhain said:
Xanadu84 said:
Humans have always known that sex will lead to a child. They have been taught by there parents. This history goes back to before we were humans. The moment a creature evolves to reproduce sexually, with a child that needs care or defense, they instinctively know. They evolve to.
It'd have to be the other way round. A species has to start protecting its young before its young can depend on protection, otherwise you don't get more generations.
In humans, the knowledge that sex leads to babies isn't instinctual, it has to be taught like everything else. It's rare that people don't know about sex nowdays, but it can occasionally happen.
Not necessarily. It was only after the human brain had evolved so much that made pregnancy 9 months, and caused children to only be able to walk after a relatively very long time after birth, compared to other animals, that the idea of motherhood and fatherhood popped up.
Not al species are as protective of their young as we are. Especially if you have dozens if not hundreds of offspring at once.