Ah, children, pity level-crossing keepers, pity lock-keepers - pity lighthouse-keepers - pity all the keepers of this world (pity even school teachers), caught between their conscience and the bleak horizon.
If behind popular fascination with Freudian theory there was a nervous, often guilty preoccupation with the self as sexual, behind increasing interest in computational interpretations of mind is an equally nervous preoccupation with the self as machine.