…Or Your Money Back is a science fiction novella by Randal Garrett, first published in 1951, under the pen-name David Gordon. There are lots of things that are considered perfectly acceptable … provided they don t work. And of course everyone knows they really don t, which is why they re acceptable…. Total Running Time (TRT): 51 min. Randall Garrett (1927-1987) was an American science fiction and fantasy author. He was a prolific contributor to Astounding and other science fiction magazines of the 1950s and 1960s. He instructed Robert Silverberg in the techniques of selling large quantities of action-adventure science fiction, and collaborated with him on two novels about Earth bringing civilization to an alien planet.