Nearly four decades ago I was a minor professional expert in psychophysics of the visual kind. So I bring to trading an acute awareness of the ways in which perception can limit one's maturation as a trader. This issue is underaddressed on ET IMO, with the exception of a few dialogues (nay, diatribes) between Jack and myself. So with the forbearance of moderation I will share with you my own views on the subject and some recent ear-opening experiences. Those of you with at least a passing knowledge of Neuro-Linguistic Programmming (NLP) will recognize the idea that individuals tend to process environmental data preferentially. One may be primarily visual ("I can see what you're saying"), but be deaf to verbal nuances. Another may preference auditory processing ("Talk to me about this picture"), and be blind to visual subtleties. Yet a third may relate to the world primarily kinesthetically ("I don't feel good about this"), and be deaf and blind to the nuances of other senses. Pit trading presumably provides inputs for all three perceptual types (and perhaps for the rare olfactory type as well), but solitary electronic trading tends to isolate one to visual inputs only. My rubric is the perceptual deprivation this causes, and the solution I have found for myself. I shall elucidate if the thread survives moderation and elicits any intelligent responses.