Quacks!
Research.
Pardon me, um, but who actually prepared for a WT study? Each paragraph spits the answers to the questions out like a 3rd grade picture book. No one has to strain a cell with an actual thought to answer. I disliked them because they were so condescending and impersonal. At least if you pass research along it makes the mundane boredom of it a tad bit interesting.
The Internet.
People who grew up in third world dictatorships knew how to use it. Nigerian scammers have been using it for decades. Who doesn't know how to use it but maybe some 70's and up?
Make sure of all things.
Revelation 2:2 GW
I know what you have done-how hard you have worked and how you have endured. I also know that you cannot tolerate wicked people. You have tested those who call themselves apostles but are not apostles. You have discovered that they are liars.