> just like you can never get perfect silence in terms of sensory perception. That's a little different because your body produces lots of noises which are onl

> just like you can never get perfect silence in terms of sensory perception. That's a little different because your body produces lots of noises which are only perceivable in the absence of other background noises, eg when inside an anechoic chamber[1]. [1] https://en.wikipedia.org/wiki/Anechoic_chamber https://en.wikipedia.org/wiki/Anechoic_chamber