4 ms·He does not need to learn all of them if he actually wants to get paid.by estefan 11y agoHe does not need to learn all of them if he actually wants to get paid.anthony_d 11y agoYou're right, but looking at the long term it helps to be as well rounded as possible. Short term you only need to know what's on the want ad.enkiv2 11y agoSomeone who only knows one or two languages is not worth paying.