Do you find it interesting that if you set out fresh bread, meat, milk, butter, or cheese, something large or microscopic or in-between will eat it?
None of these articles even mentions irreducible complexity or biotic systems.
Peruse the following articles. Irreducible complexity may, in fact be not.
How Can Evolution Cause Irreducibly Complex Systems? {29 June 2000}
Behe coined the name Irreducibly Complex for systems which would stop working if any of their components were removed. An example he gave is the biochemical system that makes clots in your blood. He said that this was like the common mousetrap, which becomes useless if you remove its spring.
Behe argued that such systems cannot evolve by a series of small modifications, each of which is a slight improvement to some initial system. His proof was that he did not know any plausible scenarios for their evolution.
Irreducible Complexity and Michael Behe {Talk Origins}
In 1996, the Free Press published a book by Lehigh University biochemist Michael Behe called Darwin's Black Box: The Biochemical Challenge to Evolution. The book's central thesis is that many biological systems are "irreducibly complex" at the molecular level.
Is the Blood Clotting Cascade Irreducibly Complex?
In his 1996 book, Darwin's Black Box, Michael Behe argued that the vertebrate blood clotting cascade was "Irreducibly Complex." What Prof. Behe means by this is that each and every element of the complex cascade of enzymes and cofactors must be in place for blood clotting to work. Since, according to Behe, an irreducibly complex system cannot be produced by Darwinian natural selection, it must have been produced by something else. It must have been designed.
Of Mousetraps and Men {Niall Shanks & Karl H. Joplin, East Tennessee State University}
In Darwin's Black Box: The Biochemical Challenge to Evolution, biochemist Michael Behe claims that biochemical systems exhibit a special kind of complexity -- irreducible complexity - that cannot possibly have evolved and must have resulted from intelligent design. In common with other creationists, Behe is vague about both the identity and methods of his intelligent designer, though he does distinguish between the hypothesis of natural design (by space aliens, perhaps) and that of supernatural design (1996, p. 243-253).