This book investigates the nature of logical space and how our conceptual framework for navigating reality is constructed through the acceptance or rejection of 'just is'-statements. Agustín Rayo, a prominent philosopher of language and logic, utilizes a formal framework to argue that these specific identity statements define our ontological commitments. By analyzing the relationship between language and metaphysical possibility, the author proposes a non-reductive account of modality and a trivialist perspective on mathematical truths.

Experts in analytic philosophy recognize this text as a significant contribution to contemporary debates on modality and the philosophy of mathematics. Readers frequently note the high level of technical density and the rigorous logical structure required to engage with the author's arguments.