2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/101881The causal set approach to quantum gravity embodies the concepts of causality and discreteness. This article explores some foundational and conceptual issues within causal set theory.LaTeX, 17 pages. Article contributed to "100 Years of Relativity - Space-time Structure: Einstein and Beyond" ed Abhay Ashtekar (World Scientific)General Relativity and Quantum CosmologyHigh Energy Physics - Theorytext