研发人员的数量变动进一步揭示了行业分化的加剧——五年间，10 个行业的研发人员数量出现负增长，且这些行业主要集中在尾部；而以消费电子及电气业、汽车制造业为代表的行业，则大力扩张研发人员规模。
Americans are destroying Flock surveillance cameras
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Credit: The Pokémon Company
SpaceX has not responded to emailed requests from BBC News for comment. The researchers also sent their findings to the company but did not receive a response.
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