Book review – science

Alchemy, astrology and medicine (before the triumph of germ theory): three worthless intellectual systems which provided a good living for many into the 18th century and even beyond. Alchemy turned into chemistry; astrology was divorced by astronomy; and medicine (which might have become Pasteurism or Listerism) somehow kept its old name while abandoning all its old therapies. There have always been people with the good sense to say that alchemists and astrologers were charlatans, and doctors were more likely to kill you than cure you, but few listened. After all, all three could claim to be ancient, respectable forms of learning. And all three were too good to be true.

True darkness, it turns out, can be experienced but does not exist. If you have been down a deep mine where the guide tells you to turn off your lamp you will have seen – in not seeing – something close to it: an utter nothingness in which your body and mind seem to shrink and expand at the same time. On a school trip to Big Pit in South Wales my entire class fell into a moment of unprecedented and never-to-be-repeated silence, a gasped amazement at the disappearance and invisibility of ourselves. Just for a moment everything vanished – and then the whooping and squealing started.  This double impulse,

The twin poles of the modern imaginarium about technology and society can be represented by two masterpieces of popular culture. In James Cameron’s film The Terminator (1984) and its sequels, a global computer system called Skynet becomes sentient and proceeds to try to exterminate the human race by means of time-travelling Austrian bodybuilders. In Iain M. Banks’s ‘Culture’ novels, by contrast (beginning with Consider Phlebas, 1987), a space-faring humanlike species has created superintelligent machines, known as Minds, which automate all the labour of production, leaving people free to pursue artistic activities and extreme sports. As our tech-bro overlords race to create proper AI, then, the present question is whether engineered