Board Thread:Speculation House/@comment-14138255-20140815002519/@comment-11188061-20140817150845

Let me put it this way. You have a soul, and so you have Aura. Aura is literally an extension of the soul, so we can establish that all living beings have Aura, yeah? Done.

So we already know that Aura naturally defends the user from danger. While we know that only those with unlocked Auras can fully manipulate the energy of their souls, those with dormant Auras should still function the same, albeit with a fixed amount of energy layering evenly throughout the body.

However. It is entirely feasible that when the person is aware of an incoming danger (say, a fist), when they cover their vitals to protect themselves, their Aura too will react and concentrate around the areas the person wants to protect. When the person's life is in serious danger, their Aura may react with equal strength to protect the person from harm and death. We may even deduce that the person can unlock their Auras in case of great danger, where they consciously wants to use their energy to accomplish something like protecting themselves.

However back to point, dormant Aura is completely reactive. The person cannot summon it consciously, and unless their being is in great danger it will not expend any strength beyond its normal output (otherwise it'll be utterly inefficient and exhausting, to use the energy that can block a tank shell to stop a tree branch). The tree branch caught Jaune completely by surprise, so his Aura didn't react nearly fast enough, nor was it anywhere life threatening that it can be forced out of its 'shell'. Thus it is logical for Jaune to get cut by a sweeping tree branch, and he can survive a hundred feet fall even with dormant Aura because they will flare in time to protect him from life threatening danger.

Of course, all speculations. But again, to dismiss people having dormant Auras that may protect them is wrong.