I mentioned that the origin seemed to be the Heinlein book because it is the earliest reference I can find. Is that insufficient or just incorrectly worded? Perhaps something like, "The earliest reference appears to be..." or "The origin may be..."? I'm new so all advice is welcomed. - Operknockity (talk) 13:28, 25 January 2008 (UTC)
The "may be" might be OK, but in general making such inferences from what you can find is WP:OR. Better to just say "an early use of the term is" or something that's not forming a conclusion based on limited evidence; best, if you can find someone who has already published a comment on the origin of the term, is to report and cite that. Dicklyon (talk) 16:56, 25 January 2008 (UTC)