“A defective filter permits the “grounds to get mixed up with the coffee.” An ADDer experiences the world as a barrage to his senses—noises, sights and smells rush in without barriers or protection. Normal noise levels can interfere with his ability to hear conversations or maintain a train of thought. Even in a relatively quiet restaurant, background noises compete for attention and interfere with the ability to listen to the server. During a telephone call, the ADDer may snap at a spouse who makes the slightest noise in the room. Unfiltered visual distractions can make shopping a nightmare. The process of scanning the contents of a large department store can be agonizing. The quantity of choices is overwhelming and often creates feelings of intense anxiety and irritation.”