One of the profound mysteries in biology that no materialistic theory like Darwinian evolution has ever been able to explain is how an organism develops from a fertilized egg. The video below shows the development of a chicken embryo, and as you watch it ask yourself how the cells know where to migrate to and what structures to form when they get there.
Ask yourself, too, how these cells know when to move, when to divide and when to differentiate.
What controls and choreographs all of this and how did that control system evolve?
A computer programmer can program a computer to control machinery in a factory so that it performs specific functions in a specific sequence in a very rudimentary version of what's happening in the embryo, but then the computer programmer is an intelligent agent.
How does all that happens in an embryo come about by undirected, mindless chance? I wish someone who thinks it did would explain it to me because the only explanation of these sorts of biological mysteries I've ever found are along the lines of, "It just did, somehow, and someday we'll know how."
Perhaps, but scientific promissory notes, especially notes whose maturity date is never specified, are very unconvincing as reasons for believing something that's otherwise very difficult to believe.
Here are a few other mysteries that seem to defy any materialistic or naturalistic explanation. I'd like very much to have someone explain how any of these could've evolved by those blind, mindless purposeless processes. And no promissory notes, please: Animal migration and navigation, insect metamorphosis, sexual reproduction, the first living cell, and human consciousness.
There are lots more, but those would make for a good start.
Anyway, here's the video: