This isn't a theory, but it's something I'm noticing.

Go back through any episodes you care to re-watch, from as far back as you can. Notice how many times you hear the word "visualize," used in conversation, either in interrogation or otherwise.  In the past week I've noticed it twice, once from the episode "Red Badge" (spoken by Roy Carmen) and once in the episode "Red Gold" (spoken by Wes Atwood). 

This can't be a coincidence.  Visualize is a big part of the puzzle, folks.