1. Winson, p. 23.
2. Flanagan, pp. 226, 231.
3. Paul Wallich, “Silicon Babies,” Scientific American 265 (December 1991), pp. 124–134.
4. Jacob Bronowski, The Origins of Knowledge and Imagination (New Haven: Yale University Press, 1978), p. 14.
5. Crick, pp. 131–132.