I would say a study of the complexity Bacterial Flagellar Motor alone would would be convincing, but I some how doubt it.
Bored to 3.625, stroked to 4.625, ported D shaped intake and exhaust ports, 42 mm mikuni carb, matched intake manifold, geared at 3.28, free flowing LSR pipes, grab a handfull and feel the torque zero to 100 before you can look down to see what it is, only took 109 years to evolve.
You don't give the primary planner sufficient credit for those flagellate motors.