New A.I. tech helps you write right

This column is a little cheerful, slightly analytical, both confident and tentative and just a tiny bit angry. At least that's what IBM's Watson thinks. Last week, IBM revealed that its Jeopardy-winning supercomputer has a new capability. It's called Watson Tone Analyzer. You can use it like spell check, except instead of checking your spelling, it checks the "tone" of your writing.