The evolutionary mechanism of natural selection selects for current function, not potential future function.
The spines of Australian echidnas and North American porcupines are remarkably similar.
Darwinism sounds superficially plausible until one looks at real plants and animals with their irreducibly complex details.
The aquatic bladderwort lacks the charm of a rose, a lily, cherry blossoms, or many other plants you can think of, but it has something else to recommend it.
Behe offered the mousetrap as an example of a simple everyday device that is “irreducibly complex.”