Archive for September, 2019


Wednesday, September 18th, 2019

In our efforts to make knowledge accessible to everyone, if we’re not careful, good intentions can cause us to blunder into useless attempts that benefit no one. I was painfully reminded of this recently when I received a request from a university for an electronic version of my book Show Me the Numbers to accommodate […]

The Perceptual and Cognitive Limits of Multivariate Data Visualization

Wednesday, September 11th, 2019

[Note: To make it easy for you to read this article offline and to share it with others, I’ve made a PDF version available as well.] Almost all data visualizations are multivariate (i.e., they display more than one variable), but there are practical limits to the number of variables that a single graph can display. […]