O'Reilly logo

Presentation Secrets: Do What you Never Thought Possible With Your Presentations by Alexei Kapterev

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

LIES, DAMNED LIES, AND STATISTICS

The middle circles shown in Figure 6-24 are the same size, although they definitely don't seem so. I know it for sure because I drew them myself; they are both 80 pixels in diameter. But “80 pixels” might not mean anything to you. It's just a number. We can only make sense of this number in comparison.

image

FIGURE 6-21: Line chart makeover.

image

FIGURE 6-22: Obama's line charts.

image

FIGURE 6-23: What does your chart resemble?

image

FIGURE 6-24: An optical illusion of size.

If you're surrounded by giants, you will seem small. If you're surrounded by pygmies, you will seem tall. We can try to be “objective” and not surround ourselves with anything or anybody, but then people have a hard time coming to any judgment at all. We can surround ourselves with giants, pygmies, and tons of average-sized people, but then we run into the risk of overloading the audience. So, where's the fine line?

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required