This drawing represents the floor plan of a room-sized installation, originally shown at the Sonnabend Gallery in New York City. The yellow-brown lines demarcate masking tape on the floor, the red dots indicate pennies, and the thick gray line shows the placement of a wall, which separates four statements that end with “in” from four statements that end with “out.” In this work, Bochner investigates how visual representations of an idea compare to the way we perceive language alone. For example, in everyday usage, the deceptively simple phrase “all are not in” would seem to imply that some (in this case, pennies) are “in”and some are “out” of the related box. However, in Bochner’s image, we see that the “ALL ARE NOT IN” statement that accompanies the uppermost box on the left is interpreted in an entirely different way—all pennies are, in fact, outside the box and therefore “not in.” The same ambiguity holds true when relating the statement “ALL ARE NOT OUT” to its visual interpretation in the box in the lower right of the drawing. During the early 1970s, Bochner engaged in mind-bending questioning of the ability of language to convey certainty in meaning. The curious title that the artist gave this piece relates to his interest in visual representations that test the philosophical concept of an axiom as a “self-evident truth.”