This is an attempt to coin a new term.

AOL

AOL stands for “Analytical Overlay” and refers to an analytical overlay or interpretation by the viewer. It is a mental construct that arises when the brain attempts to interpret vague sensory impressions too hastily. For example: The viewer perceives the target as "metallic, shiny, hard, cylindrical" – and suddenly thinks of a rocket.

Castle Building

Castle Building is a phenomenon in which a viewer – consciously or unconsciously – suppresses or ignores accurate impressions because they do not fit the AOL. The brain constructs a mental "castle wall"; just as a medieval master builder could not simply take any stone from the quarry, but rather had to sort out more stones than he could use. In remote viewing, this means that the viewer only perceives and records impressions that fit the original AOL. Everything else is rejected.

Example: The viewer sees the AOL "rocket." After that, he gets the impressions "soft, natural, green." Instead of noting these objectively, he brushes them aside because they don't fit the image of a rocket.

Reverse Castle Building

Even more subtle is "reverse" castle building: Here, the viewer secretly believes that the AOL is wrong – and now begins to ignore or block out all impressions that would fit that belief as well.

Example: The viewer receives the AOL "rocket", but considers it nonsense (since they secretly assume that all AOLs must be wrong) – and now begins to suppress the impressions related to energy, smoke and fire, ascent, and noise.

IOL

IOL stands for "Imaginary Overlay". Unlike an AOL, the IOL doesn't originate in the mind of the viewer, but stems from the mind of the tasker or a third party. When an IOL happens, someone is injecting false information into the remote viewing process, either through the use of telepathy, or through technological means.

Example: The tasker wants the viewer to see the reality of the Golden Gate Bridge in San Francisco. While setting the target, he also creates in his mind the picture of a rocket flying through the sky, right above the bridge. The target now consists of a real thing (the bridge) and an imaginary thing (the rocket).

The problem with this kind of overlay is that the viewer typically is unable to distinguish between reality and imagination while remote viewing. Everything blends into one type of perception.

The term IOL is needed so we can learn how to discern reality and imagination while remote viewing.

A possible solution is to probe every perceived thing for its origin.

Example: Probing the bridge (which exists in physical reality) will yield the perception of people building the bridge. Probing the rocket (which is an IOL) will yield the perception of a person thinking about it, indicating that it doesn't exist as a physical thing.