Learning from bad graphs and weak analysis

Yesterday's Times features a blog post about the Kindle. There's a lot wrong with the post (which hopefully has been corrected by the time you read this) and I thought I'd point out two useful lessons. Nick Bilton, the author of the post, also did the graphs, and as a former newspaper art director, he has no one else to blame for the way the graphs appear or are interpreted.

As you can see from the graph to the right, he's trying to make the case that lots and lots of Kindle owners are...