Book excerpt: For more than 50 years John Clute has been reviewing science fiction and fantasy. Look at the Evidence is a collection of reviews from a wide variety of sources - including Interzone, the New York Review of Science Fiction, and Science Fiction Weekly - about the most significant literatures of the twenty-first century: science fiction, fantasy and horror: the literatures Clute argues should be recognized as the central modes of fantastika in our times. It covers the period between 1987 and 1992.