It seems that corporate leaders do not owe their career advancement to sophisticated economic analysis.

看起来，企业领导者的职业发展并不归功于复杂的经济分析。

It takes  sophisticated analysis in the best of times, and even then, the uncertainty is still  significant.

即使在最好的情况下， 也需要进行复杂的分析，但不确定性仍然很大。