MARIAH CAREY Caution (Sony) Well, no, I didn’t expect to be here either. The Carey oeuvre was marked for me, seemingly for good, at the height of her octave-and-chart scaling ‘90s dominance. That was the time when she may or may not have said “I don’t do stairs”, but the truth didn’t matter as it seemed both in keeping with a public profile that was almost certainly unfair (but brutally funny), and in a sense regally appropriate for a pop singer who crushed competition like s