Powerpoints

I'm not exactly sure where Tufte gets his information from but speaking from personnal experience I can say that Powerpoint has helped many adults, teens, and children comprehend information that would have otherwise been never learned. He says that there is little information on slides when in actuality it's really all the information you need because if it wasnt then the teacher or presenter would add some more slides. In my psych class our teacher uses a powerpoint everyday and without that powerpoint I would be lost. Not every person is able to write down information just from hearing it alone, especially if the speaker talks fast. Having the powerpoint is benefical in that it allows the audience to copy down what the speaker is trying to get across without becoming lost or thinking to themselves "What did he just say?". Another point he makes is about the graphs and colors and what not. Most of the time people will look at a table of number and say what the heck am I looking whereas if you present them a graph with different colors they can make out for themselves what data is being presented.