ABSTRACT
Humans rely to a very great extent on vision to inform them about their world. Hearing, touch, taste, and smell provide much less information. This is evident in how we cope with sensory limitations. Corrective glasses or contact lenses are worn by most people with defective vision. Some people with hearing loss wear hearing aids, but doctors report that they typically wait many years after needing them to actually get them. As the density of taste buds drops with age, the only remedy is adding more spices. It is vision that provides more than 90% of learning for the typical college student (in spite of that fact, presenting verbal lectures is still the typical teaching method). Anecdotal evidence suggests that people who are blind from birth still construct a mental image of their surroundings, based on other sensory evidence. We think, and dream, in images.
