this from a simple yet moving essay by designer Milton Glaser
If you turn on your TV set and look away at the nearby wall you will discover that the reflections produced by the light from the TV set constantly vary dramatically in contrast and intensity. These contrasts are paralleled by the sounds emitting from the same source. It occurred to me that abrupt changes in the intensity of light, were indications of danger that our neurological system has evolved to respond to. What effects can a lifetime of exposure to this assault produce? After all, our children are subjected to it within months of being born. When a shadow passes over a field mouse, it becomes alert to danger. Every cell of our body has been programmed to respond to light. It’s obvious that the intensity of visual and audio contrast has increased though the years. I assume that our brains’ response to this continuing onslaught is a protective deadening to our neural receptors. I am convinced that the passivity and indifference of the American public to their own lives and interests, is some how related to this phenomena. — Milton Glaser