Yesterday, when I wrote about the person who Twittered using nothing but the power of his mind, some commenters were quick to assume that I'd been duped:

Um, the message "sent" by this guy's brain was sent on April 1. That should tell you something.
Posted by toadmommy on April 21, 2009 at 1:21 PM

April First? REALLY, Paul??
Posted by josh bomb on April 21, 2009 at 1:39 PM

However, as commenter gloomy gus points out, it is a very real experiment. People are typing with their brains.

Seriously, guys: I'm not quite that gullible. And this twit-braining seems a little less crazy when you hear about the existence of the monkey who can move a robot arm with its brain. This video is from last year:

Seriously: We live in a world that (as Slog tipper Maria points out) has bionic penguins. Typing with our brains isn't that unbelievable is it?