 Consider your present visual experience. Suppose that you are seated at a table in a garden. You are looking at objects on the table and at the vivid colors of flowers in nearby beds. Now focus on a particular static instance of your looking: the moment in which you see a white coaster on a brown garden table with a cut daisy lying just beyond the coaster. The sense data for this scene would be the particular shapes and colors as immediately experienced, e.g., a white patch as seen out in front of you. You are looking at the coaster from an angle of about forty-five degrees. At this angle, many observers report the momentary visual experience of an elliptical white shape. (Try to experience this for yourself by observing a round coaster on a table at the suggested angle. As we will discover, not everyone agrees that the patch looks elliptical: some find a circle at a slant.) The table top is small enough that you can take it in at one glance: at this angle, many describe their momentary visual experience as containing a trapezoidal brown expanse, with the larger base of the trapezoid toward them. The daisy presents sense data of a specific yellow and round shape, white petal-shapes, and green leaf- and stem-shapes.