Atran, Scott (2019) Superior or inferior, human uniqueness is manifold. Animal Sentience 23(50)
Colin A. Chapman and Michael A. Huffman, Why do we want to think humans are different?
Chapman & Huffman (C & H) contend that, as with all biological traits, there is evolutionary continuity underlying cognitive and social traits previously thought to be unique to humans. Yet C & H, like Darwin, appeal to a seemingly unique moral aptitude that enables humans to be kind to conspecific strangers and other species.