[groovy2shoes]

"Business-class" -- I like that!

And I also see (now) where you're coming from. But it's hard for me to accept the "once the value has been created" exception, because in my mind the construction of a value is as important as any other operation on that value.

Anyway, I'm not going to argue this any further -- I think we understand each other's perspective and we can pretty much resolve to chalk this one up to the (rather unfortunate, imo) lack of precision that's so common to terminology in computation science (see also: any debate whatsoever about types ;) ).