It may seem preposterous to have to advocate for and even defend “knowledge-based journalism” against ignorant or dumb opinionation. But we live amidst a growing faith in the reliability of what Jaron Lanier and others refer to as “hive mind,” the collective wisdom (and lack thereof) of whatever amorphous and usually anonymous aggregate one might encounter in an online forum or the listener base for a call-in talk show or the habitués of your neighborhood sports bar. […]