As Darwin argued, “we can hardly believe that the webbed feet of the upland goose or of the frigate-bird are of special use to these birds.”
Examples of so-called “convergent” evolution are ubiquitous, including the camera eye design shared by the squid and human.
Today our knowledge of the eye’s design is far more detailed. Particularly striking are the incredible mechanisms at the molecular level.
Even Charles Darwin, after publishing his theory of evolution, privately admitted “The eye to this day gives me a cold shudder.”
UCEs are conserved structures that are not functionally constrained. Yet there is not so much as a hint of a problem for evolutionary theory.