This text explores the ontological distinction between two fundamental types of occurrences: external changes in the configuration of components and internally integrated events. External changes, such as a landslide or the unloading of bricks, are classified as "pseudo-events" because their cohesion is imposed from the outside, typically by an observer or environmental context, rather than by an inherent internal principle. However, the author argues that these pseudo-events should not be dismissed as insignificant or non-existent. On the contrary, they play a vital role in the universe and serve as the primary focus for quantification and the study of inertial movements. In contrast, "true events" are characterized by genuine activity, internal integration, and the emergence of novelty. The essay highlights that while pseudo-events deal with the redistribution of existing elements, true events represent an active creative process. This differentiation is crucial for understanding how we perceive the dynamics of the world, distinguishing between mere mechanical rearrangements and authentic happenings that possess their own internal unity and transformative potential.