Authors of books on the show and its contemporaries, however, have not always accepted the Kroffts' alternative explanations for apparent references to drugs. David Martindale, author of "Pufnstuf & Other Stuff", maintains that the Kroffts' desire to attract an audience who are now parents of impressionable children pushes them to downplay the double entendres: "But to deny it, the shows lose some of their mystique. The Kroffts prefer to remain playfully vague." Martindale said in another interview that he fully believes Marty Krofft's insistence that he did not use drugs, especially given that Marty's focus was that of a businessman, but Martindale describes Sid Krofft as "a big kid" and "a hippy", saying, "His comment when I told him we were going to do this book was—and I quote—'Oh, far out.' He says these shows didn't come from smoking just a little pot, and you could say, 'Oh, yeah. It comes from smoking a lot of pot.' But I think he was very deliberately doing double meanings so the show could amuse people on different levels."