From New Scientist:
Behold – the only known example of a biological wheel. Loved by creationists, who falsely think they are examples of “intelligent design”, the bacterial flagellum is a long tail that is spun like a propeller by nano-sized protein motors.
Indeed, the diversity of the motors and the fact that they have evolved many times in different bacterial lineages, scuppers the creationist view that the machinery is “irreducibly complex”. More.
Have a look. The New Scientist writer seems anxious to so mangle the idea of irreducible complexity that “irreducible complexity” means lack of diversity and “evolved only once.” People indulge in this kind of thing when their claims are so intimately a part of their readers’ lives that no correct person would question them.