CRDTs merge concurrent edits. Why not concurrent creation?

CRDTs (Conflict-free Replicated Data Types) can merge concurrent edits to the same content, but struggle when two users simultaneously create child containers at the same key—causing one creation to disappear from view even though both exist in history. Loro now addresses this with "Mergeable Containers," which identify child containers by their logical position rather than the operation ID that created them, allowing concurrent creations to merge into a single shared container. Users can access this through new API methods like `ensureMergeableList()` and `ensureMergeableText()` for scenarios where child containers should be identified by location rather than creation order.