我们的回答是：这个问题不是开发时间，而是从项目开始到交付的全部时间。
Our reply: the issue is not development time, but rather the time between project inception and delivery.
我们开始研究项目应该交付什么(哪些工件)。
We start investigating what (which artifacts) a project should deliver.
我们并没有这么做——并且我们可能在此得益于XP——精确的使用项目速率来指示我们在未来的迭代中能交付多少内容。
What we did not do — and we would likely have benefited from an XP coach here — was accurately use project velocity to indicate how much we could deliver in future iterations.
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