According to this argument, object oriented languages that don't require tail call optimization from their compiler(s) don't preserve object-oriented abstractions. I'm not 100% sure I buy the argument, since even if you do tail-call optimizations there are ways to implement the example in such a way that it runs out of stack space anyway--but perhaps his argument is that there's no correct way to implement the example (in the OO paradigm) without tail call optimizations. If that's the argument then I need to think about it some more.
If you're so evil, eat this kitten!
"The presentation or 'gift' of the Holy Ghost simply confers upon a man the right to receive at any time, when he is worthy of it and desires it, the power and light of truth of the Holy Ghost, although he may often be left to his own spirit and judgment." --Joseph F. Smith (manual, p. 69)