> But the programmers will, one way or the other, get exposed to the features you considered esoteric. Be it through libraries, or sample code, or whatever. And

> But the programmers will, one way or the other, get exposed to the features you considered esoteric. Be it through libraries, or sample code, or whatever. And then they have a piece of code in the language they use for daily work that they don't understand, can't debug, and are alienated by strange compiler errors - not good. Alternatively, this is a learning opportunity. Not automatically bad, either, especially if the resources are in place (especially mentoring) to really exploit it. And, (opinion warning!) unlike C++, in Scala the techniques & principles of the more pointy-headed stuff can often be reused in other settings.