Brevity and Echo is tailor-made for the reader who savors the thrill of discovering how an entire emotional arc can be compressed into the space of a tweet, because every one of its 55-to-1,400-word stories is a polished gem originally vetted by top-tier journals like McSweeney’s and Best American Non-Required Reading, each piece an Emerson alumni calling card that collectively showcases the evolution of flash fiction as a serious literary form.