I am pretty sure you hit the limit of the network analogy.

>the brain reconfigures (right?)

Right. New neurons, axons, synapses, and more are constantly being generated in the brain (though, perhaps not under certain conditions).

It seems unlikely that any area of the brain would be unconnected, or at least, unconnected for very long.

It's knowing how to manage a person or situation once you open up a 'dark' area; I'd prefer the terminology that an area is 'dark' is rather referred to as something you're simply conditioned to (or suppressed/repressed) - it's underneath your conscious level, as otherwise it would leave you less able to function in day-to-day life.

Practicing meditation is a kin to understanding oneself.

"I found it easier than many to accept the epistemological notions of the world internal and external as dependent concepts enforced by ignorance and perceptual challenges."

Source:https://www.reddit.com/comments/1piku6/

Indeed. Great read, thanks.