Just to flag that these are not necessarily consensus analysis, I can't speak for the details but there were linguistic papers discussing that these people actu

Just to flag that these are not necessarily consensus analysis, I can't speak for the details but there were linguistic papers discussing that these people actually use different directions - cardinal when outside, but simple relational inside. So they are not necessarily all day aware of every direction (which in any case is easier when you live in a small hut and normally are in areas you know well).