diff --git a/whole-game.qmd b/whole-game.qmd
index d6d3c4a..b4d2f3c 100644
--- a/whole-game.qmd
+++ b/whole-game.qmd
@@ -26,7 +26,7 @@ The later parts of the book will hit each of these topics in more depth, increas
 knitr::include_graphics("diagrams/data-science/whole-game.png", dpi = 270)
 ```
 
-Five chapters focus on the tools of data science:
+Four chapters focus on the tools of data science:
 
 -   Visualization is a great place to start with R programming, because the payoff is so clear: you get to make elegant and informative plots that help you understand data.
     In @sec-data-visualization you'll dive into visualization, learning the basic structure of a ggplot2 plot, and powerful techniques for turning data into plots.