The brain is loose on border control, and once a part is no longer regularly populated, the neighboring parts wash in incredibly fast.

Oh, I love this image. Like the brain is a landscape of sand dunes, that shift and pile up in different ways, depending on the weather. Or like a complex hourglass of a thousand chambers; you can turn it one way or another and see how the grains tumble through the tubes and fill in here and there.

Kurt Vonnegut's warning: “We are what we pretend to be, so we must be careful about what we pretend to be.” Which always made me think of how if you practice a piece on the piano for long enough, you memorize it without trying to memorize it. So likewise, if you're doing the same kind of garbage every day, what is that going to do to the brain.

And what if we meditate in an attempt to "clear our thoughts," to free up mental space in the pursuit of clarity? Doesn't that just leave wide open spaces ready for invaders?