This was supposed to be of scientific interest, educating visitors in the evolutionary doctrine that placed Africans in close relationship to apes.
It’s so elegantly simple, why didn’t anyone think of this before? Animals evolved because they evolved.
Contrary to popular and media myths, Darwin’s view of evolution faced from its beginning opposition and criticism from scientists that have never gone away.
Basically, it’s a how-to guide for sugarcoating evolutionary dogma in the science classroom.
A friend recommends this passage from biologist Wayne Rossiter’s book Shadow of Oz for its delightful analogy.