COLUMN-Unsinkable ways to avoid a Titanic portfolio

CHICAGO, April 20 (Reuters) - By now you're probably seasick of hearing about the 100th anniversary of the Titanic tragedy and the myriad analyses of why it sunk and what it means. Yet for some of us who felt compelled to see the James Cameron movie again - and got suckered into paying for a disappointing 3D - we're still looking for metaphors and analogies.