Imagine if Cuil was on a line. Absolute Cuil at the center. Every possible reality can be plotted on the positive part of the line, except if it is not within the bounds of what is possible and what is not. If it is not a possible reality, by defying any laws that define reality, then it is on the negative line. This means, that if it is on the negative line its reality is impossible, and the closer it is to absolute Cuil, the closer it is to a possible reality.
-1 Cuil would be, a man hands you a hamburger, and it simply falls though the floor.
-10 Cuil would be, something so impossible it is extremely difficult to image. Just think, "It is far from what could actually happen"