He rerekē, e ngana ana ki te whakamahi i te mōhiotanga o te āhua ki te pakoire i te āhua o te āhua (hangarau, te hangarau rānei, i te Greek technē) i kitea e ngā kaipūtaiao māori hei huarahi tika ake mō ngā kaimahi o te taunaha pāpori hahaka iho.