He said "second-guessing" the firms was part of his job.

他说“事后评论”这些公司是他工作的一部分。

This strategy keeps us from second-guessing the database engine.

这种策略可以让我们不必二次猜测数据库引擎。

Without this, our lives might well be filled with second-guessing.

若没有这种肯定，我们的生活很可能充满了事后的不确定。

We waste a lot of time, energy, and focus second-guessing ourselves.

我们不断地对自己进行重新思考，以至浪费了大量的时间和精力。

So the challenge is making better choices, never second-guessing and always looking forward.

所以做出更好的选择的是更大的挑战，永远不要事后评价，并且保持希望。