[SideburnsOfDoom]

I use interfaces all the time, and like generics, they are a way of getting around the limitations of a strict type system, at the cost of making the type system more complex.

I may as well say "Interfaces are an epicycle that IMHO sits poorly with JavaScript."

There are good things about strong typing, but it's astonishing how many language constructs can be thrown away if you don't have it.

[AndrewDucker]

Well, yes. You lose huge amounts if you don't have strong typing. After all, "naturally", nothing is strongly typed. Typing was added to languages so that you would have guarantees about what form your data would take.