Having read through this, I think its a ciol project, but i am not clear how its usefull to represent an area.

So there are two comparable projects, S2 library and ubers H3, both of them represent areas but the codes are not memorable. In each case, if you want to represent usefull area, say a park, you are going to have to combine multiple smaller cells to make up that shape. Thats not going to be memorable to a human. So i am not clear why a memorable system would ever need to represent an area.