This project explores the typographic and cognitive potential of the pre-existing notion of 'typoglycemia' - a concept relating to typographic error, and the maintained ability for us to make sense of words or sentences when jumbled up. Concertina Book This concertina book presents the concept of typoglycemia and its relevance within the contexts of writing, reading, cognition, communication and typography, as well as the relationship between these areas. It presents some of the key ideas, illustrating and challenging these cognitively and typographically.