But the reality of them is that they are not extensions of our senses, so much as compressors of experience. That is they map a broader reality into our limite

But the reality of them is that they are not extensions of our senses, so much as compressors of experience. That is they map a broader reality into our limited sensate experience. When we use them we have to remember that the map is not the territory, and we have to be especially careful about artifacts they may introduce.