I was a philosophy major in college and semantic quibbling over Gettier problems was popular while I was there. I have always believed that Gettier's popularity was due to the fact that the paper was only three pages, and therefore it was the only paper that the academics actually read to the end. I never thought there was anything particularly deep or noteworthy about the problem at all - it is fundamentally a debate over the definition of knowledge which you could debate forever, and that's exactly what they were doing - arguing about the definition of knowledge, one 30-page paper at a time.
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