[zug_zug]

Agree 100%. I pretty much discount everything everyone says until we start running hard science experiments.

One way to measure scientifically is to ask somebody to picture a room. The the experimenter keeps describing adding items to the room until the experimentee can no longer recall. By defining positions for all these items one could verify it is indeed visual memory by asking location questions.

I don't know if other people have thought of this and started doing it yet, but they should.

[GoblinSlayer]

I have a pretty strong geometric imagination, but it's shape alone. When I try to convert it to a colored raster image, I get a transparent silhouette. How would you differentiate that? Also constructing an image by description isn't the same as making an image by myself from nothing.