JONATHAN COHN SEPTEMBER 23, 2010
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The Republican "Pledge to America" is out, and I'll give them some credit: there are more concrete policies in there than I've seen Republicans suggest in a long while. Sure, their ideas are largely terrible, overly simplistic, or some combination of the two. But, hey, it's a start. Maybe the Republicans are finally serious about policy.
Or maybe not. Consider this graph, which purports to show government spending as a fraction of GDP under recent administrations:

At first, I looked at that graph and thought "Holy cow--President Obama is proposing to double the size of government!" But then I saw the numbers at the top and bottom of the graph. The increase in government as a share of GDP looks so large only due to the fact that the box only ranges from 17 to 24. With that scale, even a small increase looks huge. Here's what a more honest graph of the same data looks like:

As you can see, the size of government does grow slightly (assuming the Republican numbers are correct, which I have not independently verified). But it does not grow nearly as dramatically as the first graph would suggest. By distorting the scale of the graph, the pledge's authors mislead readers.
UPDATE: Ezra Klein has produced another graph, which provides yet another honest way to look at the data. My initial point was that federal spending had risen from a relatively small fraction of GDP to a slightly larger, but still fairly small, portion. Ezra's graph is useful for understanding the precise magnitude of that shift.

3 comments
In keeping with the continuing use of "Republic" demeaning and insulting terminology, how about we staqrt by calling it the "Republic Pledge to Defraud America"?
- desertdog
September 23, 2010 at 1:25pm
This is a very old trick. You sometimes see it in commercial print ads comparing one product's virtues against the other. It's not a lie, but it is misleading. A similar trick is to simply draw the bars out of proportion without an accompanying vertical axis and, to avoid outright lying, have the true number next to each bar. The news media is so feckless, and transparency so replaced by "truthiness," it's easy to get away with this sort of stuff with impunity..
- MICRM
September 23, 2010 at 6:13pm
This is indeed a very old trick. In fact, it is the first of four showcased varieties of "lying" with graphs found in the 1954 classic: "How to Lie with Statistics". These are itemized and illustrated in Chapter 4: "The Gee Wiz Graph"
- Bezirganian
September 29, 2010 at 11:30pm