If somebody is working with a language and applies for another job working with that language, then you have high confidence that they aren’t going to suddenly

If somebody is working with a language and applies for another job working with that language, then you have high confidence that they aren’t going to suddenly realise they dislike the language and therefore the job. If somebody hasn't worked with the language before, that confidence is not there at all. > I'm certain loads would like the opportunity to use what they think is a 'better' language Sure, but expectations and reality are not always in agreement. The grass is always greener on the other side, right? Those people might have a different opinion after working with the “better” language for a while.