A Greater Infinity Author:Michael McCollum A young engineer is embroiled in the machinations of two competing probability traversing cultures- one human , one neanderthal. Utilising his knowledge of our space program he seeks a resolution of the conflict. A fast paced story which competently merges two of the major themes of SF. Much the best of M. McCollum's work. A sequel would be most... more » appreciated, expanding on the linear time travel & truly alien civilizations hinted at towards the end of the story.« less