This was a very funny collection of amusing science fiction stories. Good humor is sometimes hard to find in the field, but this book includes classics from Tenn, Lafferty, Bester, Silverberg himself, etc. I still remember reading "Useful Phrases For the Tourist" by Joanna Russ when it first appeared in Carr's UNIVERSE in 1972 and laughing non-stop like a loon for the best part of an hour.