The actual entity, the occasion of experience, is logically atomic in the sense that it cannot be cut and separated into two other occasions of experience. This kind of logical atomicity is perfectly compatible with indefinitely many spatiotemporal overlaps of occasions of experience. One can explain this atomicity by saying that an occasion of experience has an internal causal structure that could not be reproduced in each of the two complementary sections into which it might be cut. Nevertheless, an actual entity can completely contain indefinitely many other actual entities.