A long time ago, before death by PowerPoint

A long time ago — before PowerPoint was invented — in a galaxy far, far away, leaders gave presentations backed by large electronic wall displays. Below, for example, is a photo of General Dodonna (from Star Wars IV) briefing a packed room full of starpilots, navigators, and droids. Notice how he uses the entire wide screen to display only visual information, a digital vector animation of the inner workings of the death star. Notice too how he has gathered the troops close to the front, how...