So you'll often hear it said (correctly) that while schools teach Newtonian physics, once you get to university and learn about quantum mechanics, you'll realise that much of Newtonian physics is incorrect.
I think a better way to think of it is that Newtonian physics is a perfectly valid model for the world that humans generally experience. (I studied maths at university, and remember well the lecturer pointing out how Newton fails when things are very fast - bring in special relativity, or very small - bring in quantum mechanics. But we still then went on to study a newtonian approach to planetary motion, and it all can be used fine in practice analysing spinning tops, projectiles, pendulums, etc).
And in a similar way, that's why it's almost ridiculous that we need an academic biologist to explain sex - all humans are "experts" on sex, as it's a basic distinction we need to make (like other animals) in order to survive. And since the time of domesticating animals, we would have had a pretty clear idea which two members of a species we had to put together in order to achieve reproduction and obviously related that to human sexes.