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It’s true that many of the old dreams of science fiction have been fulfilled, or bypassed. And it does feel as if we’re living through a time of accelerating change. But science fiction has – rarely – been about the prediction of a definite future, more about the anxieties and dreams of the present in which it is written. In H. G. Wells‘s day the great shock of evolutionary theory was working its way through society, so Wells’s 1895 classic The Time Machine is not really a prediction of the year 802,701 AD but an anguished meditation on the implications…