It should also be borne in mind, that the law may be true, but yet, owing to the geological record not extending far enough back in time, may remain for a long period, or for ever, incapable of demonstration.
Gogoan hartu beharrekoa da, gainera, legea berez egiazkoa izan daitekeela, baina, genealogi erregistroak iraganera aski hedatzen ez direlako, denboraldi luzez edo betiko frogatu gabe iraun dezakeela.