Offering one of the first critical receptions on identity in Thomas Pynchon’s latest novel beyond the reviews, this paper seeks to show that bilocation, a fictional disposition affecting personal mobility in Against The Day, brings up the question of what we are by suggesting what we could be. It investigates how the novel redefines and enlarges concepts of identity by exploring several aspects of sameness and selfhood exposed to a very special kind of migration: Being in two places, countries, or worlds at the same time, a multiplicity of characters in Against The Day opt for the excluded middle when a fork in the road presents itself. The paper investigates these new forms of identity in the novel and explores their impact on philosophical concepts such as the notion of a seamless continuity of identity, the role of subjectivity for identity, and the concept of a narrative identity.