>The question then is whether it was functional programming that actually made the difference, or the people who had enough perseverance and skill to actually l

>The question then is whether it was functional programming that actually made the difference, or the people who had enough perseverance and skill to actually learn Scala in the first place running the project. Oof, it may indeed be the second, but what do they get out of the deal? A lot of FP programmers refuse to go back, simply because it feels nicer. It's a hell of a lot easier to "persevere" on a project when your language doesn't make you want to dig your eyes out with a spoon.