noun
Aviation term for the flight data recorder and cockpit voice recorder, typically orange despite the name.
事故機のブラックボックスが回収された。
The black box from the crashed plane was recovered.
noun
black box; opaque system
General term for any device or system whose internal workings are hidden or not understood by the user.
AIの判断プロセスはしばしばブラックボックスだと言われる。
The decision-making process of AI is often said to be a black box.