More importantly, how can you accurately assess you are iterating down the right path for your product and company success, and not simply digging further in a rat hole ?

更重要的是，我们如何准确地评估我们是否位于一条通向成功产品和公司的康庄大道上呢，还是我们仅仅是在挖开另一个无底洞？

youdao

A rat lived in a hole under the bridge.

有一只老鼠住在桥下的一个洞穴里。

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Mr Berman told the Washington Post that although "billions have gone down a rat hole in the past" in Pakistan, he did not want to "micromanage" the country's use of the new money.

BBC: Pakistan civilian-military ties hit new low

It turned out that buying a home in the U.S. in those years was like throwing money down a rat hole.

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