We examine a motivational account for the shift in feedback: positive feedback increased novices' commitment and negative feedback increased experts' sense that they were making insufficient progress.

我们测验了这些反馈的激励效果：积极的反馈增加了新手的情感认同而消极的反馈则增加了老手对于自己进步程度不够的认识。

Yet such progress tends to be exaggerated, and even if it were real it would be insufficient because of two huge threats to the forest.

尽管进步是实实在在的，但是仍然被夸大了，这是因为森林仍受到两大威胁，所以这些进步是远远不够的。

If the progress and risk reduction demonstrated by an iteration is insufficient, then the project can be cancelled, or redefined, without great loss to the organization.

如果本次迭代所展现出来的进展以及风险缩减并不充分，项目可以被取消或是重新定义，而对组织来说损失并不是很大。

We need to know what not to do because bad habits and wrong methods, not insufficient practice, are the main causes of a lack of progress.

这是很重要的，我们必须知道什么不该做，因为妨碍进展的主要原因是坏习惯和错误的方法，并非不足的练习。