"The infra-ordinary," which lies beneath the threshold of ordinary perception: this is the original title of this collection of posthumously published texts by Perec. It is not the major events or the unheard-of occurrences that define life, but rather: a dead bird. Concrete, brick, glass. A house number. Where someone you knew casually once lived. Background noise. And from the banal observations, trivial notes, and pedantic inventories of the smallest changes, surprising, strikingly universal, tragicomic, and poetic truths emerge and burst forth, as is always the case with Perec.