So I was thinking, since the revival of Juubi we have seen that both Kurama and Gyuki know many things about Juubi. My question is how? We have seen that when the sage used creation of all things, the bijuu appeared in a young age so it's like they were born from the beginning. So how exactly when Ten tails was revived, Kurama said that Juubi is a mindless beast and it's like a natural force that exists in the planet while he and all the other beasts are sapient? How Gyuki knew in the latest chapter that the Juui wasn't actually evolving even further but instead it used its "attack mode". Is it possible that when sage was on the verge of dying he started talking this analytically about Juubi's capacities or what?