The dangers of PowerPoint-driven thought in the military. From the New York Times article:
“PowerPoint makes us stupid,” Gen. James N. Mattis of the Marine Corps, the Joint Forces commander, said this month.
…”It’s dangerous because it can create the illusion of understanding and the illusion of control,” General McMaster said in a telephone interview afterward. “Some problems in the world are not bullet-izable.”
Of course, one can argue that the tool itself is not responsible for its misuse. What not to do, and the corollary better techniques, can be found on Edward Tufte’s site. There’s some useful commentary in addition to Tufte’s cogent remarks.