As someone whose job involves filtering massive amounts of hype to isolate the tiny tidbits of information readers may care about, I must admit that at times my filter gets clogged. So I got a kick out of reading Mark Schubin's essay "Headphones, History, & Hysteria" as he doggedly pursued a seemingly simple question: Who invented headphones?

Well, one website says it was John C. Koss in 1958. And if it's on the internet, you know it must be true. But wait! The Beyer website says it was that company in 1937. And if it's on the internet.... But wait!

Schubin eventually finds a citation that dates back to—no, sorry, you should read the essay. It's lavishly illustrated and should be compulsory for all tech critics.