而作为卢曼社会系统理论核心的自我生产与自我参照概念，在合同制度中有着明显的体现。

As self-production rule and self-reference rule, the core of Luhmann's social systems theory, reflect a clear manifestation in contract system.

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她们已不再是简单的社交网络，也不是只能应答的媒体分享站点，像电子邮件、日程表以及其它办公组件使得网络成为了一个自我生产的巨大应用。

It’s not only social networks and media sharing sites that are responsible, but also productivity applications like e-mail, calendars and other office apps.

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随着研究结果显示睡眠不足的累积效应及其对生产力的影响，人们对斯蒂尔自我评估的准确性提出了质疑。

With research results showing the cumulative effects of sleep loss and its impact on productivity, doubt has been voiced about the accuracy of Steel's self-assessment.

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