As most now realize, the fundamental problem that social networks face when trying to monetize through an advertising-driven business model is the lack of trust.

正如大家现在所意识到的，社会化网络在以广告为核心的商业模式设法赢利时面临的根本问题是缺乏信任。

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And they tried to solve every problem that a developer would face when writing an enterprise application by baking it into the framework.

他们也试图通过把问题放在框架中，从而解决开发人员在编写企业应用程序时会遇到的每个问题。

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When small fish face an extremely difficult problem-an attack, say, from several predators at once-they deal with it by forming a school.

当小鱼面临极其困难的问题时，比如说，突然遭到几个捕食者的袭击，他们会立刻形成鱼群。

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Yale psychology professor Susan Nolen-Hoeksema, an expert on depression, has studied our penchant for self-punishing rumination when we face a problem -- a tendency that many of us have indulged during the past eight months.

CNN: What really makes people happy

But large organizations face another problem when it comes to innovation.

FORBES: IDEO: How Big Companies Can Learn From Start-ups

Most successful small businesses face a problem when they need to grow because they are overly dependent on one finite resource - for instance, the time and expertise of the lone baker who starts her own business.

BBC: American Giant: The problems of being an overnight success