So, we're taking stuff that I already don't really understand and wrapping them in functions. The "wrap this in a function" is mostly pretty easy, except the part about renaming a function-internal variable. That part is also easy, but I never remember it until I submit the exercise.

I think I need to download some data from the US Census Bureau and start chewing through their data with R-Lang, JuliaLang, and so on.

Too bad #DataCamp doesn't also cover GNU Octave. It's been so long since I used Octave and SciLab that I'm sure I'd just sit there staring at a blank screen.