The state has wrapped up a week of explaining to jurors how it came up with the 1-point-77 billion dollars it's seeking from tobacco companies in the Minnesota tobacco trial. Defense attorneys say it's seriously flawed. Minnesota Public Radio's Laura McCallum reports... The bulk of this week's testimony could easily be called the LEAST riveting of the trial - it included no intriguing industry documents, no discussion of what tobacco companies knew about health risks and when they knew it. But the minutia of statistical calculations is a vital com