Try to refute the math presented by the video. You'd look smarter.
It's quite easy. Just take their discussion of the Cambrian Explosion. The speaker holds a fundamental misconception about it that makes any conclusions he draws from it worthless. He makes the mistake of believing that the "explosion" was an actual sudden appearance of new kinds of species that hadn't existed before, or didn't exist before in anything like that form. This is wrong. All those types of species existed before, just lacking hard parts that would survive the fossilization process. Hard parts were a new adaptation to the first appearance of jaws. Once jaws came into existence on predators, it created a strong environmental pressure favoring the development of various hard parts of the body as a defense, and thus all those species seemed to suddenly appear in the fossil record. It was just an adaptation that made them visible to us there. The explosion refers to their sudden appearance in that record, not their sudden coming into existence without predecessor species very similar to themselves.
