If Jehovah's people don't speculate, then I guess the WT, by its own definition are not Jehovah's people. They speculated that the wild beast is Satan. They speculated that the archangel Michael is Jesus. They speculated that 1914 was when armageddon would come. They speculate that armageddon will come "any day now". Come on now, if anyone knows any history of the JWs, they SPECULATE.
Here are some more speculations: from www.jwfiles.com
1999 "The apostle Paul was spearheading the Christian missionary activity. He was also laying a foundation for a work that would be completed in our 20th century." {WT Jan 1 1989 12} [bound volume changed "20th century" to "day"]
see the original scan here: www.jwfiles.com/scans/WT1-1-89p12.htm
TS1, of the not-gonna-swallow-any-more-bull class