R
rossum
Guest
Irrelevant. The definition of irreducible complexity makes no reference to organic or inorganic.The arch is inorganic and not organic.
If you want an organic example then look at a Venus Flytrap, that is irreducibly complex, yet it evolved. Venus Flytraps are in the same clade as Sundews. Both catch insects. Sundews catch them with sticky sap and close slowly to enfold the insect for easier digestion. They take minutes to close, so they need their sticky sap to hold in insect in place.
Now speed up the closing. The sap doesn’t need to be quite so sticky, so it can be a bit better at the digestion part. Speed up a bit more: less sticky and more digestion. Continue down this route and you get a Venus Flytrap. Insects are caught on speed alone, not with sticky sap. The sap is entirely specialised for digestion.
That is how we get irreducible complexity. There was an essential component during development: sticky sap to hold the insect in place. That component is no longer required for a fast trap, so has been abandoned, leaving an irreducibly complex system, similar to a mousetrap. In effect the sticky sap was like scaffolding, which is only needed while the arch is being built and can then be removed. The sticky sap was only needed while the trap closed slowly.