ors"></span>
<img src="StatsThinking21_files/figure-html/badColors-1.png" alt="Example of a bad figure that relies solely on color contrast." width="768" height="50%" />
<p class="caption">
Figure 4.10: Example of a bad figure that relies solely on color contrast.
</p>
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<p>Even for people with perfect color vision, there are perceptual limitations that can make some plots ineffective. This is one reason why statisticians <em>never</em> use pie charts: It can be very difficult for humans to accurately 