Freakonomics Radio Edit this Published in Freakonomics Radio by Freakonomics Radio Is Learning a Foreign Language Really Worth It? Listen 21 min Queue Download this audio Want to embed this player? Use the code below. More info. <iframe frameborder="0" scrolling="no" height="130" width="100%" src="https://www.wnyc.org/widgets/ondemand_player/wnyc/#file=/audio/json/354565/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend Yes, it expands the mind but we usually don't retain much -- and then there's the opportunity cost.