So notice that common knowledge thanks guys common knowledge is a rather subtle thing, thank you.

所以要注意下,共同知识,谢谢你们二位,共同知识的定义是严格的,谢谢

耶鲁公开课 - 博弈论课程节选

It's much rarer than in the general population because these are fit young guys, but you cannot pick up the subtle abnormalities.

CNN: Fears for stricken soccer player Muamba's recovery

No more subtle sabotage of our efforts that makes us look like the bad guys and Europe the good guys while breezily cozying up to the West's enemies.

CENTERFORSECURITYPOLICY: Ending the free ride