They can serve as an application of theory to explain a problem, or a way of capturing observations to help build a theory.
Tu pondola oku lekisa ekolelo lietu poku eca atambululo, oku lombolola ocinimbu cimue Cembimbiliya, kuenda oku lombolola ulandu umue u lekisa esilivilo lioku kapako olonumbi Viembimbiliya.