Most development projects do not start from scratch, but attempt to use an existing code base.

大多数开发项目并不是从零开始的，而是尝试使用一个已存在的代码基础。

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We do not have to start from scratch.

我们无须从头开始。

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If you clearly see you're going into the wrong direction with your strategy do not be afraid to stop and rethink everything even if it means you have to start everything from scratch.

如果你很清楚地意识到走了一条与自己规划不符的道路，不要害怕停下来重新考虑它。尽管这意味着你要绞尽脑汁将一切重新开始。

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