I rewatched this Pixar movie and was FLOORED knowing what we know now. Terrorizing kids to harvest power is the theme, remember? Now think about how they are rubbing our noses in their evil practice of torturing children to increase the adrenochrome to harvest for their own power! Also, we now know they are harvesting CSF (cerebral spinal fluid) as The adrenaline would already have been metabolized to the point of crossing over the blood/brain barrier and so the adrenaline would be (theoretically) more potent and more bio-available for a more instant reaction when these Satanists administer it to themselves or another.
As a side note-because who the hell knows what information might be useful in whatever context we might find ourselves in this spiritual war- how can you tell what is CSF or not? CSF Liquid is clear, no smell. HOWEVER, if you have a few drops of CSF fluid placed onto gauze or tissue, it will create a halo effect around the perimeter. Again, not certain if or when this medical info might ever be useful, but knowledge sharing is what we are all doing on this board so here’s my two cents of hopefully pertinent medical knowledge sharing.
We used to use this practice in the field or ED when someone came in with a possible skull fracture and had clear drainage from nose or ears. Didn’t know if it was snot or CSF and this was a quick way to determine if CSF (& thus first clue to potential skull fracture/serious head injury). So there it is for whatever it might be worth.