This book investigates the metaphysical foundations of possibility and necessity by proposing an alternative framework that rejects the reliance on possible worlds. Michael Jubien, a philosopher known for his work in ontology and the philosophy of language, constructs a theory based on the nature of physical objects and the existence of properties and relations. His argument is grounded in an analysis of how language and cognition interact with the concept of objects, aiming to provide a more intuitive account of modal concepts than traditional Kripkean or Lewisian models.

Philosophers and students of metaphysics frequently cite this work as a significant challenge to the dominance of possible worlds theory in analytic philosophy. Experts often note the technical rigor of Jubien's prose, which requires a strong background in formal logic and ontology to fully appreciate the proposed framework.