A couple of elders brought up the idea of Proverbs 4:18 a while back and i asked them "Is that scripture is a phrophecy from Jehovah to show that his one channel of communication on Earth today would be continually getting things wrong when it comes to dispensing the proper food at the proper time?
I don't think that they gave me an actual answer.
Little children put their fingers in their ears and say na na na na to try to prevent themselves from hearing things that they do not want to hear. They also place their hands over their eyes to prevent themselves from seeing something that they cannot handle at the time. Sometimes I feel that Jw adults throw out these "thought stopping" comments like "Light getting brighter" is their way of putting their fingers into their ears. Possibly explaining how this works prior to actually sharing the info might alow them to see what is taking place.
Trying to get someone to wake up is like trying to crack a safe. You just cannot walk up to a safe and open that door without some thoughtful researach into what keeps the doors locked.
NJY