If the bottom half of the square of the preceding perspective image is treated as is the top half, then a reflection of the recessional space appears in the bottom half.
This is the underlying structure of reflective surfaces, such as seeing a tree line and sky reflected in the surface of a river or lake.
Note that the upper and the lower ares of this gird describes our familiar recessional space of everyday experience. But the horizontal area just above and below the center line is parallel to the picture plane, ie., it describes a flat space, not recessional space.
Thus we can see that the logic of this perspective system is not the same as our visual sense of "walk around" space.

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