Human assets refer to labor resources that are owned or controlled by a company for a certain period of time and can be measured in currency to bring future economic benefits to the enterprise. It is formed by capitalizing the investment of labor resources, that is, human assets are recruited by the company The cost of selecting, hiring, training, and developing enterprise assets recognized in accordance with asset metrics. According to the above definition, which of the following is not a human asset below? ['Excellent management talent.', 'Innovative R & D team.', 'Hardworking production workers.', 'Efficient personnel system.']