Rollback (Sci Fi Essential Books) - Robert J. Sawyer I was favorably impressed by the Neanderthal series, but hadn't read any more of his stories until much later. This was a large failing of mine. Mr. Sawyer deserves all the credit he has garnered over the years and I'm looking forward to the rest of his novels soon! I really appreciated the study of ethics and responsibility with the tale. It was also nice to have a hollywood ending. I know it isn't for everyone, but sometimes it is absolutely called for.