Answer
Original Source ↗Regarding the two pyramids connected at their apexes... This model implies pyramids with triangular bases. Two angles of the base represent spatial coordinates. The third angle is the causal component. The reflection of the everyday and dreaming worlds occurs in such a way that, in the case of a map, it is as if it flips 180 degrees. But the causal component also changes the interconnections and qualities of the elements of each world into something else (not always opposite, because the very concept of "opposite" also changes).