Trivia question: Who can tell us the date for the first time this idea was tried out and failed?
"Here we furnish the evidence that from the creation of Adam to (but not including) A.D. 1873 was six thousand years. And though the Bible contains no direct statement that the seventh thousand will be the epoch of Christ's reign, the great Sabbath Day of restitution to the world, yet the venerable tradition is not without a reasonable foundation." (Studies in the Scriptures, Vol. 2, p. 39. 1889)
Note: Russel openly acknowledges two points:
1. his teaching had no scriptural basis, yet he taught it anyway, and,
2. the teaching was really a tradition of men, not a teaching of God
Other than that it was a great doctrine (not!)