In addition, there are interpretations made based on the combination of various theories by period, in which a wide range of theories are found, from the theory that insists on the existence of another totally different law to the theory that argues that it is a law which had gradually became a dead letter.
さらに、以上の諸説と組み合わさるものとして、時代による違いの解釈があり、まったく別の法があるとする説から、一つの法がしだいに形骸化したとする説まで濃淡がある。