it is an interesting article!!!
people who can master more than one language are building a more resilient brain, one more proficient at multi-tasking, setting priorities...etc
do I fit to this sample?!...
..however my thoughts is, there are alot of people can speak fluent languages in the world.
but there is not a lot of people have an ability to fully-use the languages to apply on their works.
"speaking a language fluently is not equal to the person working very outstanding!"
thats my conclusion -_-"