Imagine a single musical tone—for instance, the A above middle C that the oboe plays to tune an orchestra. Now imagine this tone, with no variation in dynamics, pitch, or timbre, extended over the course of “an hour or a day,” existing, as Peirce describes in “How to Make Our Ideas Clear” (W3:262),1 “as perfectly in each second of that time as in the whole taken together; so that, as long as it is sounding, it might be present to a (...) sense from which everything in the past was as completely absent as the future itself” (W3:262). Imagine a world consisting of nothing but the sensation of this single oboe A, and having never consisted of anything but it. In such a world, Peirce indicates, there would be no .. (shrink)