In March, literary heavyweights Kazuo Ishiguro and Neil Gaiman — a Nobel laureate, and the beloved author of "American Gods," "Sandman," and "Good Omens," respectively — convened at an independent bookstore event to discuss genre and science fiction. They arrived at twin conclusions: one, that rigid genre distinctions between literary works promote an unproductive and false hierarchy of worth, and two, that the 21st century is a very tricky time to attempt to define “science fiction” at all. Gaiman said that he increasingly feels genre “slippage where science fiction is concerned” because, he says, “the world has become science fiction.” The hacking exploits in William Gibson’s novel "Neuromancer" or the sequencing of an entire genome overnight no longer belong to the realm of fantasy. For MIT students, the permeable relationship between reality and science fiction is often familiar territory. In their labs and research projects, students and faculty experience personally the process by which imaginative ideas turn into new techniques, possibilities, medicines, tools, and technologies. (And they learn that many such new realities actually have had their origins in speculative literature.)...