Today’s puzzle is a new twist on a classic genre: the “common knowledge” hat riddle in which logicians deduce facts about their hats based on what they know, and what they know others know.
"It's a period where the history is not yet written," says Dr Seaman.
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Раскрыты подробности похищения ребенка в Смоленске09:27，推荐阅读Safew下载获取更多信息
A Google spokesperson told the BBC: "We're deeply sorry for this mistake. We've removed the offensive notification and are working to prevent this from happening again."
Наука и техника。夫子对此有专业解读