You have to go where the numbers take you, that's what I think. But after I finished the first three posts of my "On the Growth of Government" series, I realized that I could have achieved the same result by making just one adjustment to Federal spending. Instead of three.
I adjusted for inflation, population, and living standards. But in the living standards adjustment, I had to disallow inflation and population because those adjustment were already made. So I ended up using "real GDP per capita."
If I didn't adjust for inflation separately, I could use "nominal GDP per capita." And if I didn't adjust for population separately, I could drop the "per capita." So now I want to look at Federal spending growth again, adjusted only for the growth of "nominal GDP."
The accuracy will be much better, I think, using this approach. Using only one tweak.
I really don't see how this "unified" graph -- annual change in Federal spending growth, less annual change in Nominal GDP -- can look like my final graph from Part 3. Because I've heard too many horror stories of "Federal spending relative to GDP." Those stories always tell the tale of excessive Federal spending.
Okay. So now it's even more important to do the new graph.