Visual Revelations – Reading Notes(2)

CHAPTER 2 Graphical Mysetires

The greatset value of a picture is when it forces us to notice what we has been never expected to see. –John Turkey

Mystery #1: Pregnancires Among !Kung Women

Confusing because:

• Using different symbols to represent different events on a common time scale. Irrelevant events have at least as much visual weight as the theortically important ones.
• Understanding the graph requires memorizing a complex legend and ignoring everything superfluous.

Key:
Use a common metaphor for all the activities.

Visual Revelations

Chapter 1. How to Display Data Badly

The Aim of Good Data Graphics is to Display Data Accurately and Clearly
How to display data badly:

1. Don’t show much data
2. Show the data inaccurately
3. Obfurscate the data

Don’t Show Data

Rule1 Show as little data is possible(minimize the data density)
Edward Tufte defines that: