The spark of consciousness is reflected in the river, where a dance of infinite faces lined in profane lights.

Something as superfluous as "play" is also an essential feature of our consciousness. If you ask children why they like to play, they will say, "Because it's fun." But that invites the next question: What is fun? Actually, when children play, they are often trying to reenact complex human interactions in simplified form. Human society is extremely sophisticated, much too involved for the developing brains of young children, so children run simplified simulations of adult society, playing games such as doctor, cops and robber, and school. Each game is a model that allows children to experiment with a small segment of adult behavior and then run simulations into the future. (Similarly, when adults engage in play, such as a game of poker, the brain constantly creates a model of what cards the various players possess, and then projects that model into the future, using previous data about people's personality, ability to bluff, etc. The key to games like chess, cards, and gambling is the ability to simulate the future. Animals, which live largely in the present, are not as good at games as humans are, especially if they involve planning. Infant mammals do engage in a form of play, but this is more for exercise, testing one another, practicing future battles, and establishing the coming social pecking order rather than simulating the future.)

Of the gladdest moments in human life, methinks, is the departure upon a distant journey into unknown lands. Shaking off with one mighty effort the fetters of Habit, the leaden weight of Routine, the cloak of many Cares and the slavery of Civilization, man feels once more happy.

We threw ourselves at that wild river every day and most days it tossed us all harmlessly skyward like well-loved children. After a while that does something to you.

It is not required that we know all of the details about every stretch of the river. Indeed, were we to know, it would not be an adventure, and I wonder if there would be much point in the journey.

She is drawn to the river, and all its hideous, dead-eyed treasures: rot-bloated cats, and cold-meat corpses of unwanted infants, eels plucking at their tender fingers and toes.