>>101796345
The nur knows where it nurs at all times. Nur knows this because nur knows where nur isn't. By subtracting where nur is from where nur isn't, or where nur isn't from where nur is, whichever is nurer, nur obtains a difference, or nurviation. The guidance nursystem uses nurviations to generate corrective nurs to drive the nur from a position where nur was, to a position where nur isn't, and arriving at a position where nur wasn't, nur now is.