Hmmmm. I came up with it a while ago when I was still in high school and took an economics class. Or actually I should say I didn’t come up with it, it’s an economics term. There are two kinds of “externalties”— positive and negative. Negative externalities are an unintentional cost given to a third party… like say some rich guy built a paper mill plant next to a river that flows downstream and it starts polluting near my house which is downstream. That’s a “negative” externality. And “internalizing” an externality is coming up with a solution for it.

Yup, I guess that’s the gist of it. I remember, I just really liked the idea of that and it was around the time I discovered tumblr so it was fresh on my mind. Hopefully, I didn’t just butcher the definition too bad haha.