Excited about the sun casting dynamic shadows across the wall, I grabbed my camera and started shooting. Lines, layers, shapes, patterns, textures—all appeared magically before my lens. I only had to frame and snap the shutter to capture an interesting abstract image. Suddenly the light vanished, and I was staring at a flat, blank, blue-gray wall. Nothing there! When the sun slid behind a cloud, everything disappeared. It was startling to realize that the image I was responding to was made up of waves of light passing through vegetation and glass, and my eyes and brain perceived its beauty. The experience left me pondering reality (not for the first time…).