And now for something completely different. The video above is a product of TedEd and a collaboration of TED speakers and animators. Visualizing this particular talk from John Lloyd really brings to life his subject. When we discuss that which is invisible (and that which we don’t know), we are reminded just how little we do know. I think that, in itself, calls into question how anyone could be considered an “expert” on anything. I guess an expert is just someone who knows more than others about a subject. Or, more aptly put, a person who doesn’t know even less than others. (Think about it. It’s true.) I hope you enjoy this picture of the invisible!