"The future is usually imagined as either better or worse than the present. If the imagined future is better, it gives you hope or pleasurable anticipation. If it is worse, it creates anxiety. Both are illusory."

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As its best, SF is the medium in which our miserable certainty that tomorrow will be different from today in ways we cant predict, can be transmuted to a sense of excitement and anticipation, occasionally evolving into awe. Poised between intransigent scepticism and uncritical credulity, it is par excellence the literature of the open mind.

— John Brunner