It feels good to rant, to get something off your chest, to say what needs to be said, to speak from experience, frustration, emotion, or conviction in a forum of lower stakes than a conference presentation or project proposal review.
Even if you learn later you were wrong, at least you can point to a major step in that learning process—that moment you decided to think out loud and expose your thoughts to the world.
Aid workers and bloggers: we want your rants.