Fisherman,
"The missing variable is Eve's age. The Bible does not say when she came into the picture. How long was Adam without Eve, 40 years?"
Actually it's the ages of Cain and Abel that limit the span of time since 1975. I once calculated it and I came up with about 130 years until the end of 6,000 years of man's existence.
Bungi Bill,
"Furthermore, this same talk had been recorded only several weeks earlier. Prior to 1975, there was certainly nothing said about the matter of Eve's creation and how that affected things. In fact, a magazine article in 1968 (entitled "Why are you looking forward to 1975?") emphatically stated that the time lag between the end of 6000 years of human creation and The Big A "might only be a matter of weeks.""
I was there at the Inglewood forum, around 1974, (Southern California) when I heard Fred Franz give his view of 1975. He stated that Armageddon would happen within months or a few years after 1975 but not decades. He even stated that Jehovah would not allow the end to be decades after 1975 because Adam would have been tempted into bestiality (the longer the time period, the longer Adam is without Eve)!!!
I remember having a tape recorder taping the talk. I don't know where that tape is or even if I still have it.