I bet the answer is not enough.
http://www.nytimes.com/2010/04/27/world/27powerpoint.html?src=me&ref=general
"“PowerPoint makes us stupid,â€* Gen. James N. Mattis of the Marine Corps, the Joint Forces commander, said this month at a military conference in North Carolina."
"“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.â€"
"Senior officers say the program does come in handy when the goal is not imparting information, as in briefings for reporters."*
"Those types of PowerPoint presentations, Dr. Hammes said, are known as “hypnotizing chickens.â€"
* = particularly awesome quote
It may seem as if I am picking on the military for overusing this. And then some will say I hate America, the Military, or that I'm a secret Muslim/communist/freemason/game show host. Actually, the US military seems aware of this and the limitations. I'm more interested in what good and poor uses powerpoint has. For example, in education: several of you folks are in college. I assume some courses are taught in powerpoint, some not. Any difference?