Board Thread:Speculation House/@comment-3257939-20151009080148/@comment-25396609-20151027004533

It does not exist before it exists, but it eists from the moment your aura is unlocked. That is why I highlighted that section.

My mention of them evolving is more in relation to the way it manifests visually, it is likely that semblances can change in visual effect over time in rlation to the users psyche, and that they an grow stronger with use.

As for presenting a hypothesis, I will admit I am wrong when you can create a more sound theory. As it stands I have provided several points of evidence.

1: aura is a tangible and scientifically understood force (as can be determined by technology existing to measure it)

2: aura is restricted to living things (WoR:A, implied by Pyrrha in emerald forest)

3: a phenomena similar to aura exists in our own world (the electromagnetic field emitted by the human body, which aura in fiction is named for)

4: the biologically generated EMF created by humans, animals, and some plants is a result of electrical activity in the brain or control system of the subject

5: the human brain inherits the basic patterns from its genetic code but develops in a unique way depending in the individual (semi hereditary)

These few verifiable facts within RWBY, when paired with knowledge of our own world, allows a solid picture to be painted of how aura works, extrapolations can be made that tie the EMF field from our CNS to semblance via the unique patterns of synaptic connections (what makes us special) this is also a direct correlation to personality (who we are) and to our genetics (basic hardware)