Factual errors in the review of literature could probably be avoided if there wasn't so much pesky reading involved. * Some paperback editions of Robert A. Heinlein's Time Enough for Love indicate that Lazarus Long goes back in time to become his own ancestor. While he does sleep with his mother, this occurs after his birth, when he is a young child. A bit incestuous, true, but not paradoxical. * The synopsis writer was probably thinking of a different Heinlein story, "All You Zombies," in which the protagonist not only becomes one of his/her ancestors, s/he becomes all of them. * The same thing happened in the slipcover for the hardback edition of To Sail Beyond the Sunset, followed by the statement that Maureen was not only Lazarus's mother and wife, but his daughter. * As