science fiction
science fiction creates our contemporary metaphors, whereas fantasy literature perpetuates medieval metaphors.
for instance, in medieval times, people who saw strange lights or experienced other strange phenonema described the experiences in terms of meeting angels or pixies, whereas, nowadays, thanks to science fiction, people are as likely to interpret these experiences as alien visitations, abductions, or ufo sightings.
science fiction by imaginary dave April 3, 2008
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