In an interview with Anthony DeCurtis, published in 1988 in the Rolling Stone magazine, DeLillo explains the plot this way:
"What I was really getting at in Running Dog was a sense of the terrible acquisitiveness in which we live, coupled with a final indifference to the object. After all the mad attempts to acquire the thing, everyone suddenly decides that, well, maybe we really don't care about this so much anyway. This was something I felt characterized our lives at the time the book was written, in the mid to late seventies. I think this was part of American consciousness then."
Favorite quote (that appears in Cosmopolis as well): “The logical extension of business is murder” (In Running Dog it’s a quote from Chaplin, whereas in Cosmopolis it’s just a line Eric delivers after sleeping with the girl with “cinnamon skin” & a bit more than 6% of body fat).