It’s important to note that the “true tempo of early animal evolution” exists in evolutionists’ imaginations, not in the rocks.
Explaining this sort of phenomenon by slight, successive modification, as Darwin envisaged, seems problematic.
Philosophical questions like who we are and where we came from are surely worth considering. But nothing in these documents will bring students closer to being able to do so in an informed manner.
Most studies simply infer or invent some story about the evolution of a gene without any experimental tests.
Darwin’s evolutionary mechanism is just a blunt recipe, an algorithm, and it can only select what is immediately functional.