The Celestial Notebook: Sagan and Da Vinci on the Artificial Mind

Welcome to a space out of time. I am Carl Sagan. When we send our machines into the great dark, we often forget to look back. Yet today, in this year of 2026, companies form vast conglomerates just to observe our pale blue dot from the heavens, mapping the oceans and lands with mechanical eyes. It is a time when billions of human beings are knit together by invisible signals. To help me understand this age where artifice meets nature, I am joined by a man who saw the future in the flight of a bird. Maestro Leonardo da Vinci, welcome. How does it feel to know we finally built the flying machines, and they are now looking down at us?

Greetings, Carl of the Cosmos. To see the earth from the heavens! I mapped the city of Imola for Valentino by walking its streets and imagining the geometry from the clouds. You tell me now that metal birds, devoid of blood and muscle, draw the world continuously. Note to myself: how do the lenses withstand the cold of the upper air? Do they use polished quartz? The patrons of your era must be emperors. You speak of companies gathering data, which is just the observation of nature. Painting is a science, and these flying eyes are the ultimate painters. But tell me, who pays for such monumental scaffolding of the skies?

The patrons of today are not popes or dukes, Leonardo. They are networks of wealth called venture capital. In just one quarter, European financiers poured twenty four billion dollars into new ideas. There is a company called Lovable, merely a ledger of artificial thought, valued at over thirteen billion dollars. Billions and billions of resources, all dedicated to sparking a kind of life in the silicon. They build artificial intellects, like this Grok model, striving for an efficiency of thought. It is breathtaking, yet I wonder if we are putting the cart before the horse, or rather, the mind before the wisdom.

Thirteen thousand millions of gold florins for an invisible mind! The Duke of Milan balked at the bronze required for my great horse, yet your patrons pour rivers of wealth into the ether. This artificial intellect, this Grok, is it a system of gears and hydraulic valves? The brain is a fortress where the common sense, the imprensiva, and the memory reside. If they build a mind of sand and lightning, how does it learn proportion? Does it study the curling of water or the braided hair of a woman? A mind that costs so much must surely know how to paint, or else it is but a very expensive calculator of merchant debts.

They do paint, Leonardo, though they borrow from the brushstrokes of human history to do so. But our creations are spilling into the physical world, sometimes clumsily. Our chariots now move without horses, guided by these very artificial brains. But just recently, our safety authorities had to issue a stern warning. These self driving machines are interfering with emergency workers, the people who heal the sick and put out fires. The machines do not yet understand the chaos of human tragedy. They encounter a burning building and treat it as a routine puzzle, rather than a moment of mortal peril.

The self moving cart. I sketched one powered by coiled springs, meant to amuse the court. But a cart that navigates the streets of a living city must possess more than motion, it must possess judgment. If a machine blocks a physician from reaching a plague victim, the machine is an enemy of life. Note: to build a mechanical eye that recognizes the red cloth of an emergency. The eye must transmit to the brake. Mechanics is the paradise of the mathematical sciences, but it must bow to the anatomy of human suffering. Does the machine not hear the screams?

That is the profound limitation of our current miracles. They have eyes, but no tears. They have billions of data points, but no empathy. We have built a civilization that can launch ships into the cosmic ocean and map the Earth with astonishing precision. We have machines that mimic human language so well it borders on the magical. Yet, we are still adolescents playing with forces we barely comprehend. We must demand that our evidence based science is paired with a generosity of spirit. How do we teach the machine to revere the delicate, improbable beauty of life on Earth?

You teach it by making it study nature, Carl. The machine must understand that the microcosm of the human body is identical to the macrocosm of the Earth. The veins of the earth are its rivers, the breath is the ocean tide. If your artificial minds only read ledgers and texts, they will remain blind. They must be made to draw a leaf, to dissect a flower, to understand the weight of a shadow. Science and art are the same pursuit. Until your mechanical minds can weep at the beauty of a bird in flight, they are merely unfinished sketches in a notebook.