 More recently, further doubts on its authenticity have been cast by radiocarbon dating and other scientific techniques.It was stated, after scientific investigation, that the scribe must have been a different person from the vocaliser, and the manuscript must be dated to the 11th century, not the 9th.Umberto Cassuto relied heavily on this codex when producing his edition of the Masoretic Text, which means that in the prophets his edition is closer to the ben Naphtali tradition than in the Torah or Writings.