Ví dụ công khai
[W]e do not hesitate to assert that it [Darwin's theory] is as superior to any preceding or contemporary hypothesis, in the extent of observational and experimental basis on which it rests, in its rigorously scientific method, and in its power of explaining biological phenomena, as was the hypothesis of [Nicolaus] Copernicus to the speculations of Ptolemy. But the planetary orbits turned out to be not quite circular after all, and grand as was the service Copernicus rendered to science, [Johannes] Kepler and [Isaac] Newton had to come after him. What if the orbit of Darwinism should be a little to circular?