Shadows do not mean darkness, they mean living light. Shadows help us to see things three- dimensionally,modelling faces and objects, and bringing out surface textures and details. A diffuse mess of lighting devoid of shadows is perceived as unpleasant. However very strong shadows with hard edges can also be annoying.The ideal shadows are well-balanced, allowing us to readily perceive forms and textures. Faces of friendsand associates sitting around the meeting table will be shown off to optimal effect. Their faces will look hard, however, if shadows are very strong, or pale and wan if they are absent altogether.