In 2007 science fiction writer Rudy Rucker, author of the 1983 Transrealist Manifesto, blogged a response to the Mundane Manifesto. Rucker stated that he "prefer to continue searching for ways to be less and less Mundane". He pointed out that alternate universes are "quite popular in modern physics" and stated that perhaps other worlds exist in other dimensions. He noted that fiction writers outside of SF use stories about time travel, so while implausible, it was worth exploring. While Rucker also rejected SF's “escapist” tendencies, and called for transrealism, he argued that elements of SF which MSF advocates reject are “symbolic of archetypal modes of perception” that are needed in SF.