scifi sagas
Why do so many amazing novels sprawl into so-so trilogies? Let alone blah tetralogies, or dull ten-book series? Blame "
Herbert's Syndrome," in which a great writer gets tempted to keep writing about a popular universe, like Frank Herbert's
Dune, long after its expiration date. (The
Fantasy Review coined the term "Herbert's Syndrome" back in 1984, so Brian Herbert didn't enter into it.) Here's a handy guide to the symptoms and causes of Herbert's unfortunate ailment.
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