I've always imagined what it would be like if the world just suddenly shifted to another universal language, for one reason or another. I always just imagined the successor to be Mandarin (Chinese). I don't really have any particular reason as to why my mind drifts to this conclusion when asked this question, but probably because the country itself has been gaining ground significantly in the last decade or so. That said, as a personal preference, I wouldn't really choose it as a universal language, personally, even if I do speak it somewhat coherently at this point. If I had the power to choose, I'd probably pick Japanese, just because I think it could be more easily picked up by everyone and their tone of speaking is a little more pleasing to the ear than Chinese, in my opinion. So which language would you pick, if your were to replace English as the Universal Language, and why?