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I’ve always found difficult the argument that Homo erectus couldn’t speak because of the size of its spinal cord. Consider that parrots manage to reproduce a wide range of human sounds.
David Petchey
Mill Valley, Calif.
I’ve always found difficult the argument that Homo erectus couldn’t speak because of the size of its spinal cord. Consider that parrots manage to reproduce a wide range of human sounds.
David Petchey
Mill Valley, Calif.