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Yes. But experiencing the emotional part of a foreign language is also important, especially when you want to read their novels, watch their movies, experience their cultures, etc.

English is my second language and I was unable to understand the underlying emotional part of an expression. Imagine what Independence Day movie will look like without those inspirational speech. I'm getting better now. But still, there always lots of space to improve.

From the article:

Ultimately, they concluded, as more countries and people across the world start to participate in a global economy and, consequentially, begin to learn foreign languages, more rational and favorable (read: risky) decisions will be made.

More rational..risky? How so?

Avoiding risk is not necessarily rational.

http://en.wikipedia.org/wiki/Loss_aversion

I wonder if this effect fades out with gaining fluency..