Yeah, I know the history of the terms, I just find them so entirely unhelpful for (harmful to, in fact) understanding Redux, no matter what reason they're there, that providing a translation is pretty much the first thing I do when introducing someone to it. Figuring out what the terms actually meant was the moment I went from "what... what is this thing doing?" to "oh it's a couple very simple things I already understand, no big deal, got it now".

> Finally, you _can_ reference multiple parts of the state tree in your reducer logic, but you have to explicitly set that up yourself [6]. The `combineReducers` utility is meant for the standard use case of defining update logic by domain "slices", and it's up to you to write custom logic if you need more specific behavior than that.

That's cool though.