People who were JW's in the early '80's may have heard this "experience" at a Circuit Assembly:
Guy studies with JW's, gets baptized. Guy suffers a severe head trauma and drifts away from the congregation. Many years later someone from that congregation sees a familiar face at a Quick Build and inquires of the local congregation. He's told they don't know much about him, he showed up at the KH with amnesia, but studied and qualified for baptism. The same guy studied and got baptized twice!
That's when the C.O. added his own comment: Isn't it wonderful, brothers! This man couldn't remember anything about his past but he recognized The Truth!
Moral of the story: Someone is going to recognize you sooner or later.