We are constantly told, by those who mock "the sanctity of human life," that chimpanzees share 98 per cent of our DNA. But the key instructions on brain-growing are in the remaining two per cent, as we discovered from the Human Genome Project. All neurons start from a single cell in an embryo, but the human ones are instructed to keep doubling for more rounds than any monkey, and to create in due course a brain whose cortex alone co-ordinates a billion synaptic connections, and whose overall complexity exceeds that of any object known in the entire Universe. It yields an instrument capable (according to the calculations of Edelman and Tononi) of some 10 to at least the millionth power of possible neural circuits: a number hyperastronomically beyond the total number of particles in the universe.
That is a single glimpse into what emerges from a human embryo. These numbers alone should fill us with horror at what is being done in our labs.