[Robert]

We humans have five senses: vision, hearing, touch, taste and smell. Could we be missing senses and not even know we are missing them. Consider, a baby born blind. As a fully grown adult the baby would have learned to function in life without the need for vision. Would this blind person have any concept of what it means to have vision? Would this person be upset or depressed because vision is not present? Assume this person grew up in a environment where all people present were also blind. I would surmise that not any of the people in this environment would have any idea what vision is and certainly they would not miss vision or be depressed that they do not have this ability. How could they miss something they do not know they are missing. Their brains would have adjusted and found ways to cope without the need for vision. There is a whole new way of viewing the world that these people don't have a clue about.

Could we be like this group of blind people? Are we missing a sense--a way of viewing the world--that we don't even know we are missing? Why only five senses. We must have developed these five senses based on evolutionary and survival needs. We must not have been subjected to environments that would have perhaps triggered the development of additional senses. How can we discover what we don't know is missing? If I were a blind man in a world of blind people, how could I discover the meaning or concept of vision?