Co-worker (who doesn't know a lot about JWs) wanted to know good questions to ask JWs when they come to the door.
I told him to ask about the meaning of "the generation" or how to calculate 1914.
After explaining to him him the history of the generation changes and the current overlapping generation meaning today, he said "that's genius because they can just keep overlapping it when armageddon doesn't come. One generation passes the baton to the next"