There is no known cause, other than intelligent design, that can produce machine-like structures with multiple interacting parts.
Dr. Howard Glicksman goes beyond a discussion of irreducible complexity to something he calls “natural survival capacity.”
Here’s a great insight and juxtaposition by historian and philosopher of science Michael Keas.
“How can you understand where life came from if you don’t understand how it actually works?”
Recent findings show cellular machinery using pushes, pulls, and even electrical forces to accomplish physical work.