아이티랩 - Is the world getting better or worse? A look at the numbers | Steven Pinker

Is the world getting better or worse? A look at the numbers | Steven Pinker

 
목록 TED TED 원문보기 2018.05.21 23:37 38 Hit 0 review 스크랩 페이스북에 공유하기 트위터에 공유하기 신고




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