Quaternary sector of the economy - Wikipedia

Surgery team at work The quaternary sector of the economy is based upon the economic activity that is associated with either the intellectual or knowledge-based economy.[1] This consists of information technology; media; research and development; information-based services such as information-generation and information-sharing; and knowledge-based services such as consultation, entertainment, broa

[matsuokahajime]

日本語版のWikipediaには三次産業までしかない。 (小学校で習った知識通りではある。) 属国は檻の中で衰退産業に従事していろという話か？ 経済学者の知識が何十年も更新されない状態なのか？