(This is a reposting of a post from five years ago. I think it holds up pretty well. The Internet seems to be changing human society in significant ways which are not yet entirely clear. Perhaps the nature of what is happening will become a topic of systematic research.)
Crazy, overconfident; the opposite of the judicious, scientific, skeptical temperament.
The opposite of thoughtful.
Changing your mind frequently, discarding what you were excited about last month and buying into something new today. Normal? Perhaps not. But typical of, for example, successful commercial bloggers who write about gadgets, electronics, photo equipment, etc.
Mass-market crazy — the opposite of Wretchard’s idea about people with rare perversions who find each other online. The crazy of promoters, attention whores and drama queens of both sexes, people who argue forcefully for provocative ideas and startling conclusions based on biased data sets. People with agendas that are not always obvious. People who cynically start quarrels to get attention.
Also real crazy, people with issues, people you would avoid in the physical world. The guy from the mail room who knows the specs of every WW2 German tank and has interesting conspiracy theories. On the Internet, if he writes confidently, he can be an authority on military history, at least for a while. People who are just plain disagreeable, who repeatedly make and alienate friends online. People who move from one enthusiasm to another, forgetting their last obsession as they focus on the next one. A few of these characters really do have unique, well developed ideas that deserve wide attention. For them, and for anyone who benefits from their work, the Internet is a boon. But most of these people are cranks. How can the reader know who is what?
In some cases crazies do well online in the short run because they believe their own bullshit and the Internet strips away many of the tells. It can take some time for reasonable people to realize what kind of person runs the website they have been reading, and then to start to reexamine what they’ve learned there. In the long run sites run by crazy people tend to accumulate crazy audiences. Crazy commenters tend to drive out the sane. We all know sites of this type. The worst of them encourage rather than buffer extreme behavior. And the same is true of the sites run by the hucksters and bombastic monomaniacs.
There is no formal remedy for any of this. It’s just how the Internet is. It’s driven in part by the online cost structure: information that used to come free in the form of accents and voice inflections and body language and local reputation is often no longer easily available. Crazy, devious and manipulative people exploit the void (not intentionally in all cases, it’s just that online we can’t filter them out as readily). And it’s driven in part by human nature. People tend to be attracted to strong opinions, confidently stated. Thus, as countermeasure, we need continually to remind ourselves about our cognitive biases. We need to be intellectually cautious. As we learned in the old world to be wary of salesmen, telephone solicitors and anyone who seemed to have all the answers, in the Internet world we learn to watch out for similar kinds of people, perhaps in different guises. There is nothing new under the sun, but once in a while we are forced to remap our old expectations and learned responses to a new environment.