The entire religion is based on speculation.
"Modesty* on the part of the faithful and discreet slave class, commissioned to provide the Christian household with food at the proper time, prevents it from presumptuously running ahead and wildly speculating about things that are still unclear. The slave class strives to avoid being dogmatic. It is not too proud to admit that as of now it cannot answer every question, keeping Proverbs 14:18 clearly in mind. But how thrilling to know that Jehovah, in his own due time and in his own way, will continue to reveal his secrets as to his purposes! Never should we become impatient with Jehovah's arrangement, indiscreetly trying to rush ahead of the Revealer of secrets. How reassuring it is to know that the channel Jehovah is using today does not do so! It is both faithful and discreet." --Watchtower 6/1/97 p.14, par.7
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* if WT is bragging about its modesty, is it really modest??
Isn't that a bit like faking sincerity??
Of course, you are 100% correct Vanderhoven, but WT fails to see its speculating forest for its false date trees.