Thinking Sand and the Event Horizon

Welcome. I am Stephen Hawking. It is 1988, and I have just published a small book about time. Time, it seems, has a sense of humor. I look at the news of 2026. Humanity is launching satellites to coordinate wars and building artificial minds to count its money. We are approaching a political event horizon. Once you cross it, nothing escapes. Not even light. Today, my guest is Leonardo da Vinci. A man from 1500. Leonardo, the armies of this era use mirrors in space to talk, and they look for unidentified flying objects in the sky. Are we a civilization bent on self-destruction, or just very curious primates?

Greetings, Messer Stephen. I write this as I observe the flight of the kite. You speak of mirrors in the heavens and minds forged of metal. To understand the machine, one must first dissect the eye. The optic nerve connects the captured light to the sensus communis. But these men of your future have separated the eye from the body. They use lenses to capture light for entertainment, like this Sony you speak of, and send signals to the stars for war. Item: investigate how a mind of brass and lightning processes thought. If they build artificial intelligence, does it possess a soul, or is it merely a complex system of pulleys and water clocks? Men have always fought over trade routes. In my time, it was the silk roads. Now it is this Strait of Hormuz. The nature of water changes, but the thirst of men remains constant.

Pulleys and water clocks are quaint. These new minds operate on silicon and mathematics. A company called Akamai just sold nearly two billion dollars worth of infrastructure for them. It is fascinating. We are teaching sand to think. But I wonder what happens when the sand thinks faster than we do. I study black holes. They are elegant. They simply consume. Human history is less elegant. We build tools to understand the universe, like the Pentagon compiling databases of unidentified phenomena. Yet we still threaten each other over oil and borders. Will our art and science survive our collapse? Or will these artificial minds be our only legacy, a monument to our cleverness and our foolishness?

Sand that thinks. A marvel. I once designed a mechanical knight for Duke Sforza, but it only moved its arms and jaw. To give it reason is the province of the Divine. Or perhaps just a matter of finer gears. You ask what survives. Paint fades. Bronze rusts. But the geometry of the universe endures. I read that their military compiles records of strange shapes in the sky. Unidentified phenomena. I have spent my life watching the birds, mapping the currents of the air. If there are other vessels flying above us, not made by human hands, we must study their wings. Do they flap, or do they glide on the invisible winds of the ether? Art and science are one discipline. If we destroy ourselves, it is because we forgot how to look at the world with the patience of a painter.

Your mechanical knight would be obsolete. The military now relies on commercial space infrastructure. A company called Viasat is paid hundreds of millions to keep soldiers connected via satellites. Multi-orbit, multi-band. It means they wrap the Earth in invisible waves. We are finally reaching the stars, and we use them to coordinate troops in the mud. It is a brilliant paradox. If we do not colonize space, we will not survive the next millennium. The Earth is too fragile. But we export our wars into the vacuum. Leonardo, you dreamed of human flight. Now we fly machines beyond the atmosphere. Does this satisfy your curiosity, or does it terrify you?

It fills me with a profound, restless wonder. To fly beyond the air itself! But how do the wings find purchase where there is no wind? I must sketch this vacuum. If the Earth is wrapped in invisible waves, it is like a great spiders web, vibrating with the thoughts of soldiers. Yet, amidst this martial noise, they also perfect the capturing of light. You mentioned this Sony, growing its wealth by sensing images and making music, even as their games of play decline. This gives me hope. They still value the eye and the ear. The eye is the window of the human body through which it feels its way and enjoys the beauty of the world. Even in a world of thinking sand and void-ships, they seek to preserve light and sound. That is the true mathematics of the soul.

You are an optimist. I suppose one has to be, to paint the Mona Lisa while surrounded by the Borgias. I look at this era and see a civilization balancing on the edge of a blade. They have artificial intelligence that might outlive them. They have sensors that see the unseen. They look for alien life while fighting over the Strait of Hormuz. It is the ultimate test of intelligence. Can a species smart enough to understand quantum mechanics also be smart enough not to destroy itself? We are approaching the singularity of our own making. Thank you, Leonardo. Your curiosity is a reminder that before we are a destructive species, we are an observing one.

And I thank you, Stephen of the stars. I will return to my workshop. I must add notes on these thinking sands and the invisible webs of the sky. Item: test if glass can be made to hold a memory. Item: look up at the night sky and search for the unmoving stars that speak to armies. The world is a vast machine, and we are but small cogs trying to understand the whole. Whether we rust or endure, the pursuit of sight is the only noble endeavor. Farewell. I leave you to your black holes, and I to my canvas.