A tiny difference or initial error, even by a hair's breadth, can lead to a massive mistake, failure, or significant deviation in the long run.
在项目初期，对市场调研数据的豪厘之差，将致千里，最终可能影响整个产品的成败。
In the early stages of a project, a hair's breadth difference in market research data can lead to a thousand-mile deviation, ultimately affecting the success or failure of the entire product.
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