These aren’t wholly original ideas.
I have seen for myself plenty of examples of pre-historians talking about prehistoric stuff that could be charting the moon. The assumption is that our ancestors needed to keep an eye on the moon for whatever they were doing. But why potentially lunar markings are divided up in ways that don’t seem to relate to the moon, is anyone’s guess, apparently. Except of course that the same monthly cycle has huge implications for female fertility.
The people in pre-history who most needed to be tracking lunar cycles, were fertile women who needed to be in control of their wombs. And who maybe also wanted to be able to educate younger women about how to do that.
When it comes to tools, there’s a tendency to focus on things with cutting edges. Partly this is because stone is what survives most reliably from the Stone Age. But, there are things to infer. Humans don’t hit the ground running the way baby horses and deer do. We aren’t furry in a way that makes it easy for babies to just hang on. Depictions of pre-historic women with babies tend towards the nearly naked, with the baby clutched to the mother any way they can.
Small babies wriggle. If you get you and them wet, they are almost impossible to hang onto. If you are holding a small baby in your arms, it is nigh on impossible to carry much else and the only thing you can do is carry the baby about. I refuse to accept that the majority of pre-historic women spent all of their time trying not to drop wet, wriggling babies. Also, babies get cold really easily, and not having a baby die of cold when it is naked in your arms all the time is going to be hard.
Our ancient ancestors were hunter gatherers. We know from modern hunter gatherers, that it is the gathering that makes up most of the diet and that gathering tends to be women’s work. You can’t gather much if every woman of breeding age is trying to do it while holding a baby in their bare hands. You can’t move around effectively if anyone under the age of two is walking. You certainly can’t run away. You can’t navigate any kind of complex terrain if both your hands are occupied with a baby.
The obvious inference, to my mind, is that one of the oldest pieces of human technology must in fact be the baby sling. Once you’ve got sharp edges, you can do things with skins, so it’s not a far-fetched idea. Women carrying babies in slings have their hands free for gathering and getting about. The baby, or small child in this arrangement is warm, safe, and easy to move about. You can’t have humans as mobile hunter gatherers if you don’t have baby slings. Our getting into colder landscapes and travelling any distance depends as much on the baby sling as it does the stone tools, the wearing of skins and the getting to grips with fire.