Whether or not Twitter makes you stupid, it certainly makes some smart people sound stupid.
The queen of aggregation is, of course, Arianna Huffington, who has discovered that if you take celebrity gossip, adorable kitten videos, posts from unpaid bloggers and news reports from other publications, array them on your Web site and add a left-wing soundtrack, millions of people will come.
People crave trustworthy information about the world we live in. Some people want it because it is essential to the way they make a living. Some want it because they regard being well-informed as a condition of good citizenship. Some want it because they want something to exchange over dinner tables and water coolers.
Everything is accessible to everyone all the time, and I think there are wondrous things to treasure with what the Internet has made available to journalists. But I think it's also had some effects that are less pleasant. It has chipped away at a sense of privacy and secrecy.
I don't think fairness means that you give equal time to every point of view no matter how marginal. You weigh the sides, you do some truth-testing, you apply judgment to them.
If a candidate for president said he believed that space aliens dwell among us, would that affect your willingness to vote for him? Personally, I might not disqualify him out of hand; one out of three Americans believe we have had Visitors and, hey, who knows? But I would certainly want to ask a few questions.