Imagine that you are alone in a void. You have always been alone in a void.
You've never experienced any sensory input which didn't arise from your own body.
There is no light—not a single photon—so you have never seen anything; even your own body. The very concept of sight is, therefore, completely alien to you (as is the concept "alien"). You might have noticed the movement of your eyes against your eyelids, but that's just an odd sensation arising from your own body; you have absolutely no reason to suspect that those twitchy bits can perform any useful function.
You've never felt anything external to yourself; there is nothing external to yourself. Not the wind, not the pull of gravity.
Smell, if it existed, would be airborne and is therefore unknown, as is most sound, though the beat of your heart has been a never-ending background to your life. You don't notice your heartbeat, though: it is merely an unacknowledged, ever-existing fundamental property of the universe.
No up, no down, no left, right, back, forward, hot, cold. In an unchanging world, no past nor future. Your body is your entire universe, and the idea that anything might exist outside it unthinkable. For the very good reason that nothing has ever existed outside it. You don't even have the concept "outside it." How could you have?
All this might seem a bit boring, but don't worry. Even the concept "something to do" is completely outside your experience.
Experience is outside your experience.
Let the consequences sink in. Your intelligence would mean nought, in the face of never having had anything happen to stir the slightest thought. Imagination means nothing; there's nothing to build the simplest narrative upon.
Think about it for a while. You are the inhabitant of a single, unchanging, never-ending, featureless moment.
Let it sink in.
According to the most widely-held creation story, such a creature came, uncaused, into existence, and imagined—and then imagined, and employed, a way to create—time, galaxies, stars, planets and moons; sex, plants, people and polyps; water, rocks, land and clouds; gravity, Brownian motion, chlorine and cats, and even the light to see them all by.
A creature which had no way to form the concept "other," managed to invent morals, worship, love, hate, satisfaction, sadism, sarcasm and supplication.
And you think the Big Bang seems far-fetched?
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