I thought the most enlightening part of this article wasn't about the slopegraph itself, but on visualization in general. To me, this was a very effective messa

I thought the most enlightening part of this article wasn't about the slopegraph itself, but on visualization in general. To me, this was a very effective message about the care necessary to avoid imposing an interpretation on the data. By selecting the two scales used, the designer of the graph -- whether intentionally or not -- is introducing meaning where there might not actually be any. For example, should the right-side data points have been spread out so that the highest and lowest points were as high and low as the Switzerland and Mexico labels (the highest and lowest figures, apart from the US) on the left? Should the scale been adjusted so that the Switzerland and/or Mexico lines ran horizontally? Each of those options would have affected the layout of the chart. I’m not saying that Uberti should have done that -- just that a designer needs to tread very carefully when using two different scales on the same axis.