STRANGE AS IT MAY SEEM, ARGENTINIANS ARE SLOWLY getting accustomed to stability, both economic and political, and to a guarded optimism about their future. Not that optimism is difficult to come by in these shores. On the contrary, despite melancholy tango lyrics, national spirits are quite ready to rocket to the skies, only to fall with greater momentum from those heights at the next difficulty. What is new is not optimism, but its guarded, and I would say for once justified nature.