Here’s another “incredibly fortunate” thing about the Cambrian explosion and about evolution generally.
“A lot of scientists, because of the influence of materialism, are inured to the reality of their own minds and therefore of minds in general.”
Life and the cosmos were evidently designed by a mind with the ability to look forward, toward the future, and anticipate problems which could then be addressed before they come up.
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.