A-Manual

How do you know that Kryptos is not just a troll? What makes everyone who are working on it so sure that there's an actual message? Is there a hint of incompleteness based on the other Kryptos codes that were already cracked?

First of all, congratulations on the success of the book! When publishig books like this, is it necessary to include the references at the end? Also for the references, did you consult experts or did you just went through related materials and articles.

I see, thank you very much for your response :)