"The thing to remember is that science fiction should not be judged by how accurately it portrays the future, but by how lucidly, and entertainingly, it describes for you the possible varieties of future that lie within our grasp.
The prediction of gadgets is a part of this, to be sure. But it is only the smallest part. What is more important in a real sense, and what is a lot more fun, is the detailed imagination of the skilled science-fiction writer at work, building a future universe for you..."
— Frederik Pohl, Introduction to The 2nd 'If' Reader
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