Early in the 21st century, several hundred million copies of Microsoft PowerPoint were turning out trillions of slides each year. What is the problem with PowerPoint? Slideware often reduces the analytical quality of presentations - in particular, the popular PowerPoint templates. - Edward Tufte
ps: там, кстати, хорошие книжки есть...
Visual Display of Quantitative Information
Visual Explanations: Images and Quantities, Evidence and Narrative