The AAH has been criticized for containing multiple inconsistencies and lacking evidence from the fossil record to support its claims.[4][24][60] Morgan, for instance, failed to discuss any fossils found after 1960 and much of her analysis was by comparing soft tissues between humans and aquatic species.[4] It is also described as lacking parsimony, despite purporting to be a simple theory uniting many of the unique anatomical features of humans.[4] Anthropologist John D. Hawks expresses the view that rather than explaining human traits simply and parsimoniously, it actually requires two explanations for each trait - first that proximity to water drove human evolution enough to significantly change the human phenotype and second that there was significant evolutionary pressure beyond mere phylogenetic inertia to maintain these traits (which would not be adaptive on dry land) and points out that exaptation is not an adequate reply. Hawks concludes by saying: