We're all each other's brain cells......

Proceeding from conceptions of the noosphere and including or not the Gaia hypothesis depending on how horny you are, although also on a much less grandiose level, we can easily claim that we act as each other's brain cells. The way this works is that, externalized by our discrete physical embodiments yet connected by ever so many tenuous threads— especially in this current age, but the same holds for all premodern social formations— each of our individual brains forms for every other person a cluster of neurons which are accessed sub-telepathically whenever any form of communication is established. Those neurons would otherwise not organically be accessible, and would likely never develop (at least so readily) due to the limitations of belonging to only one single brain. That one can adopt the fruit of the activity of another's neurons and more or less incorporate it into one's own neural network means, essentially, that there is a transphysical field of cerebral activity connecting numbers of people into an overarching brain plexus.