Good point: as you become an expert in the given system, you can encapsulate or abstract away multiple things into one. A silly example: when you are learning

Good point: as you become an expert in the given system, you can encapsulate or abstract away multiple things into one. A silly example: when you are learning to dress yourself as a kid, zippers are hard, shoe laces are hard, putting left shoe on left food often gets mixed up. All these little details. When you are older, these details take no mental capacity and you can "get dressed" as a single concept.