An Echo

"An echo, while implying an enormity of a space, at the same time also defines it, limits it, and even temporarily inhabits it." -Mark Z. Danielewski

Reading this quote made me really think about ways of knowing outside of science. While an echo can be defined with sound waves and logical explanations, here is a definition that seems to be driven more by emotion and even sense perception. How can changing our usual ways of knowing help us gain a new perspective on something, such as the nature of an echo?