What Is the Difference Between Memrise's Approach to Curriculum Design?

I want to talk about how that approach contrasts with that of Memrise but before we get to Memrise I still want to kind of like lay the groundwork here for what actually goes into designing a curriculum on a more granular level. Can you really quantify what should or should not be in a curriculum in the traditional sense of the word? There's a lot of different things that can be meant by a curriculum right and it also depends on the sort of mode of teaching or whether it's classroom based or if it's an app. All of these different methods can kind of do different things if it's one-on-one teacher like sort of informal tutoring but also the focus of what