[rualca]

> "Old" in what sense though? In the style/fashion sense?

If you take the time to look into it, you'll discover that the functional style is only a change in the "fashion sense" to those who are totally oblivious to their advantages.

I get how the pedantic take on monads turns people away from the functional side of programming, but you'd be hard pressed to find anything to criticize how returning either/result monads from promises is not a huge improvement over the boilerplate-rich/pure OO approach to Java.