The standard evolutionary model is incapable of driving major transformations such as a fish evolving into an amphibian.
As Denyse O’Leary asks, “Why is it comparatively easy to develop a program to play chess, as opposed to teaching a robot to walk freely?”
Darwin’s evolutionary mechanism is just a blunt recipe, an algorithm, and it can only select what is immediately functional.
It’s strikes me that this is a difference between design and Darwinian thinking.
Father Michael Chaberek helped me (a passionate but amateur Thomist!) understand an issue that perplexed me for years.