The math is not hard to follow. There just isn't enough time. Biologists who believe in evolution have been ignoring mathematical truth for many years and the general public is never told. The current theory of evolution was formed and accepted before there was such a thing as molecular science. Now that we can follow molecular processes, neo-Darwinism has been hit hard by science itself.
Evolution is no longer explainable through organisms themselves.
If you can't explain how the biochemistry of a creature evolved, you can't explain how the creature evolved. That means each system has many steps and parts. Each part of the system is useless by itself, so individual parts would not evolve because they would not benefit in any way. The whole system must have sprung into place all at once to provide benefit to the organism. Darwin himself admitted that human vision was the biggest roadblock to his theory - and he had no idea how complex human beings really are.