What if Early Hominins Were Butchering Animal Carcasses With Stone Cutting Tools?

Aderico has a hypothesis to explain how the first number sense in counting systems came to exist. He says, what if early hominins were butchering animal carcasses with stone cutting tools? They've got little hand axes or hand blades. And they realize while doing so that they left permanent marks on the bones afteru them. The bgins with accidents.