Everyone's favorite A-list target, Robert Scoble, announced the unthinkable a few days ago: he will be moderating his comments. But what some people found far more disturbing was Robert's wish to make a change in his life that includes steering clear of "people who were deeply unhappy" and hanging around people who are happy. The harsh reaction he's gotten could be a lesson in scientific ingorance, because the neuroscience is behind him on this one.