How Can Bottomup Selection On Lowerlevel Units Produce

{
  "doc": "/Users/antonborzov/GitHub/aboutblank/knowledge_base/questions/how-can-bottomup-selection-on-lowerlevel-units-produce.md",
  "tags": [],
  "type": "question",
  "status": "open",
  "created": "2025-10-23",
  "updated": "2025-10-23",
  "category": "other"
}