The meaning inside the bubble is local and relative. The feeler at the center of the bubble feels a composition on the inner surface of bubble which is the outcome of all lenses and mirrors on the wall of the bubble.
To create a composition inside the bubble, some contrasting parts are needed. The contrast experienced inside the bubble is relative to the components of the composition. On a white surface, a small dark spot is much more noticeable than a larger spot on a dark background.
As the viewpoint changes, the meaning of a composition changes. All interpretations inside the bubble are relative. If we consider the smallest window (1), most of the surface is red. If we look at a bigger window (2), most of window becomes white. If we expand our view and look at a bigger window (3), again most of the window becomes red. The largest window (4) has more white. We see that we cannot correctly evaluate a composition without knowing everything and seeing the whole picture. Feeler’s compositions are always local and incomplete.