If you have a choice about how to lump categories, you can make the numbers say different things.
Are interstate truck drivers and pizza delivery people really the same job? And why are primary school teachers and secondary school teachers different jobs, and not lumped under “K-12 teachers”?
I got that from Reddit, where the NPR article was posted today (despite being more than a year and a half old), probably because it was posted here on BoingBoing. So now I’m copying the link back here to make a circle.
Most of the people brewing your coffee are not baristas(*). In LA and NYC, they’re mainly actors. In other cities, they’re novelists or poets. In my town, they’re surfers.
(*) At least, that’s not what they put down on the surveys.