‘Tis the season for invisible forces. With Midsummer’s eve and good weather sitings of all sorts of gnomes and fairies, the unseen can be top of mind. In this issue we won’t talk about magic, but we will delve into sensory experiences that often seem unseen, starting with Sound. Sound has the potential to influence at a greater distance than any other sense (an olfactory experience needs to be nearly debilitatingly overpowering to beat out an acoustic one for its…