What distinguishes us from apes? Well, especially the education. Doiy takes this serious as model and presented a bookend which displays the evolution from a primate to the Homo Sapiens.
And by means of reading: The more one knows, the more he might feel as a human. And the things we read decide about the kind of person we are. Everything between the ape and the current humans is printed in between of book covers, and the Evolution bookend displays what it really is. Whether being different to primates by means of knowledge in literature, physic or another scientific area, is offensively presented with the creative Evolution bookend by Doiy.
Doly manufactures the Evolution bookend out of metal, so that the burden of knowledge might not be more heavy than the support. This is how the bookends might survive several evolution steps.