Observer controller observer controller Notifies all observers that have been registered with the agenda model when an entry or to-do list is added, updated or deleted.

观察者控制器：当一个日程条目或者待办理列表添加、更新或者删除时，通告所有在日程模型中注册的观察者。

youdao

People who have a hidden agenda or who confuse a model with reality can misuse it.

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According to my count, we now have eight Nobel Prizes to economists who cast doubt on the Keynesian model, and zero to economists for advancing the Keynesian agenda.

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But privacy is back on the national and consumer agenda, and Yoon thinks this time infomediaries like Bynamite can make the model work.

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