The entire hominid collection known today would barely cover a billiard table, ... the collection is so tantalizingly incomplete, and the specimens themselves often so fragmented and inconclusive, that more can be said about what is missing than about what is present. ...but ever since Darwin's work inspired the notion that fossils linking modern man and extinct ancestor would provide the most convincing proof of human evolution, preconceptions have led evidence by the nose in the study of fossil man.