Jancha d’Arc relied on popular enthusiasm, not on a state structure that mobilizes popular forces in a long, continuous war. Until such a structure took shape in France, it was not possible to expel the British interventionists.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.