Again, your common sense tells you, "Look, you are pulling something whose effective mass seems to be 5, the answer is 2."

你的常识会又一次告诉你,"你在拉一个相当于 5 千克的物体,所以加速度是 2 "

耶鲁公开课 - 基础物理课程节选

Until recently, the hurdle to fully leverage content assets has been the lack of an effective mechanism for mass.

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"In all of pandemic planning it has been recognized for some time that cancellation of mass gatherings is not an effective way to control influenza, " Gustafson said.

CNN: Canada's Olympic-sized plan to fight H1N1

Oh, sure -- this has certainly been tried before, but given that things like this need a critical mass of followers to be effective, we're particularly jazzed about Google's own initiative.

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