yeah, you absolutely can emulate this stuff to a large degree. My point wasn't that it's impossible, but rather you have to build it from orthogonal primitives.

yeah, you absolutely can emulate this stuff to a large degree. My point wasn't that it's impossible, but rather you have to build it from orthogonal primitives. And even then I don't think you can get the same degree of trampolining that you can get with inheritance (for example, we can get Bar.qux() to call Foo.baz() easily enough via interfaces, but then IIRC it's trickier to get Foo.baz() to call Bar.asdf()--that said I'm too busy to think it through properly).