Levy's book is at its best in describing the early MIT hackers at the Model Railroad Club and the early days of the microcomputer revolution. He never understood UNIX or the networks, though, and his enshrinement of Richard Stallman as "the last true hacker" turns out (thankfully) to have been quite misleading. Numerous minor factual errors also mar the text; for example, Levy's claim that the original Jargon File derived from the TMRC Dictionary (the File originated at Stanford and was brought to MIT in 1976; the co-authors of the first edition had never seen the dictionary in question). There are also numerous misspellings in the book that inflame the passions of old-timers; as Dan Murphy, the author of TECO, once said: "You would have thought he'd take the trouble to spell the name of a winning editor right." Nevertheless, this remains a useful and stimulating book that captures the feel of several important hackish subcultures.