Does the gradual evolution of tools prove humans evolved?
"Paleontology has discovered progressive improvement in tools made by evolving primates, which seems to correlate with development of hominin brains and anatomy.
Complex sentient behaviors of irrational animals enabled early primates to produce primitive stone tools, even including early Acheulean stone hand-axes exhibiting some symmetry—wrought by Homo erectus hominins dating back 1.4 million years. Still, it wasn’t until the early Middle Pleistocene period, some three-quarters of a million years ago, that later hand-axes appeared having a congruent, three-dimensionally symmetrical shape that apodictically demonstrates true human intellection.4 This, as well as evidence of early controlled use of fire, appears about that time"
So he said as the human brains developed you see more and more advanced tools until you get to modern humans. Humans could invent more advanced tools hundreds of millions of yeas ago because their brains were not as evolved yet.