Whilst pondering the nature of acting, I also pondered the theory of relativity, and came to the realisation that if e=mc2, then the relation of matter to energy, of inside the body to outside of it, is one of relative densities. Logically, then, one should be able to access all molecular activity as information, whether it has consolidated into matter or not. Music is a good analogy to use here, as music, although “abstract,” is an event with a physical correlate (finger in contact with string), with an instrument’s vibration effecting a result in the realm of “non-matter” to produce a result that is audible, if not visible. This idea of the inherent substantiality of movement and sound is critical to any discussions of why we look to remember ‘the invisible’.