Sturgeon’s revelation, commonly referred to as Sturgeon’s law, is an adage commonly cited as ‘ninety percent of everything is crap.’ It is derived from quotations by Theodore Sturgeon, an American science fiction author.
The phrase was derived from Sturgeon’s observation that while science fiction was often derided for its low quality by critics, it could be noted that the majority of examples of works in other fields could equally be seen to be of low quality and that science fiction was thus no different in that regard to other art.
The first written reference to the adage appears in the a 1958 issue of ‘Venture,’ where Sturgeon wrote: ‘I repeat Sturgeon’s Revelation, which was wrung out of me after twenty years of wearying defense of science fiction against attacks of people who used the worst examples of the field for ammunition, and whose conclusion was that ninety percent of SF is crud.
Using the same standards that categorize 90% of science fiction as trash, crud, or crap, it can be argued that 90% of film, literature, consumer goods, etc. are crap. In other words, the claim (or fact) that 90% of science fiction is crap is ultimately uninformative, because science fiction conforms to the same trends of quality as all other art forms. Sturgeon’s other law is: ‘Nothing is always absolutely so.’
The Daily Omnivore 
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