  Knowing real essences would enable us to deduce tertiary qualities, then, but what about secondary qualities?  Here matters are initially less clear, since Locke seems to be saying both that more acute senses would not do away with the secondary quality of sound, but might do away with the secondary quality of color. In one passage, Locke imagines our having very acute senses, including “microscopical eyes”, and he clearly assumes that we would still experience the secondary quality of sound: “If our Sense of Hearing were but 1000 times quicker than it is, how would a perpetual noise distract us” (E II.xxiii.12, pp. 302–303). Yet in a preceding passage, he had suggested that if our faculties were designed for detecting real essences, we would not experience color at all: