[GeoffC]

Originally Posted by pdurrant

No, there's no trick. No talking parrots, or any other communication through pets or wildlife.

Spoiler:

There a kind of slow communication, when they are not released from the tower each evening.

Spoiler:

I'm going to have to walk on by on this one, there is a level of logic (or even guess work) going on that makes it difficult to understand how each wise one knows what the other is thinking, and why it takes 5 days before one of them gives an answer to the gaoler ..... and upon what that answer is based.....