登録して招待リンクを共有すると、動画再生報酬と紹介報酬を獲得できます。

Max Roser
@MaxCRoser
Data to understand global problems and research to make progress against them. Founder of @OurWorldInData / Professor at @UniofOxford
参加 June 2012
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Why numbers are sometimes better than words. What people think you say when you say “little chance,” “probably not,” or “highly likely.”