The Flight of the Horse

Larry Niven reasoned out that there was and could be no such thing as time travel - becasue it is scientifically impossible and implausible. So if so-one has a "time machine", it is not a scientific invention - it is a fantasy device. If your boss send you back in time to get a horse (as happens in The flight of the Horse, you will of course come back with a unicorn.

Enjoyable as light / humourous "SF" (fantasy). Even if you enjoy it though, I strongly recommend NOT continuing on to Rainbow Mars, because it is POOR.

My rating system starts with a rating of one star for a story/novel that I ranked "C -". Ratings move up 1/2 star with each step, up to 5 stars (equivalent to a ranking of A+). I reserve 1/2 star for works rated D and lower.