I fully agree with your comments on the lack of direct illustration of
evolutionary transitions in my book. If I knew of any, fossil or living, I would
certainly have included them. You suggest that an artist should be used to
visualise such transformations, but where would he get the information from? I
could not, honestly, provide it… Gradualism is a concept I believe in, not just
because of Darwin's authority, but because my understanding of genetics seems to
demand it. Yet Gould and the American Museum people are hard to contradict when
they say there are no transitional fossils… It is easy enough to make up
stories of how one form gave rise to another, and to find reasons why the stages
should be favoured by natural selection. But such stories are not part of
science, for there is no way of putting them to the test.