 To develop this line of thought and make it vivid, imagine a vacuum jar which has the property of immediately creating a vacuum upon closing the lid, and of immediately recalling air upon opening the lid. Take now a sounding object like a tuning fork at 440Hz and have it vibrate, supposing that the vibration fades and becomes inaudible after 10 seconds. What you hear is an A that becomes feebler and feebler until it disappears. Now, place the tuning fork inside the jar, have it vibrate as before, and repeatedly open-and-close the lid of the jar, say once in a bit less than a second. What do you hear? You may have the feeling that a few short sounds, each feebler than the preceding one, come into existence and pass away. But you may as well have the impression of a sound that is revealed by the opening and closing of the jar. Indeed, the fading of the sound should be audible from each “window” to the next, implying that there is a single sound that fades. If sounds were either sound waves in the medium surrounding the object, or items dependent on the medium as per the Relational Event Theory, we would be forced to admit that the tuning-fork started and ceased to sound; because the relevant sound waves would not be present in the surrounding medium. Only the first impression, that of a series of short sounds, would be accounted for. But the second impression, that of a continuous underlying sound that is revealed, is supported too. A visual analogue of this would be the perception of an object in the dark, on which light is shed at intervals. We would not have the impression that the object gets its colors and then loses them at intervals.