Why the Fermi paradox is anything but.

You and me and the kid next door. We all were lied to. By the ones we truly trusted: James T. Kirk, Spock, Yoda, and even E.T.

All the Star Trek episodes are big fat lies. And Star Wars and E.T. They should have told us upfront: we will never meet intelligent aliens, become friends with them, or wage war against them. Never.

We might one day hear echoes of civilizations long gone, yet we will not meet. Humans are condemned to eternal solitude by the rate of our technological progress and the scale of interstellar distances. As Princess Neytiri remarked in Avatar, “This is sad. Very sad only.”

The Neanderthals, with whom we mated and then exterminated, were our last Star Trek.

Enrico Fermi casually asked a great question: if the galaxy is so old and so full of sun-like stars, where is everybody? Hidden inside it are really two questions. First, could we ever talk to another civilization? Second, a harder one: why do we see no trace of them at all? No signals, no spaceships, no engineered stars, nothing. This essay answers both. And the answer to both turns out to be a function of time, distance, and, most importantly, accelerating progress. Here is the story of how these delivered us into solitude.

I.  We shall never speak

By any measure, the long history of life on Earth is a story of acceleration. It started slowly, taking over 3 billion years to progress from single cells to primitive animals. It then took 400 million more years to move from primitive animals to mammals, then some 100 million years to early primates, and around 40 million years from first primates to our ancestors. Nearly 6 million years separate humans and chimpanzees from our common ancestor. We Homo sapiens are only 0.3 million years old. We have been able to speak for about 0.1 million years. Writing, and thus all recorded history, is less than 0.01 million years old.

On a human timescale, it took millions of years to develop speech, then 100,000 years to develop writing. Just 5,000 years after that, we invented the printing press. From there, it took only 400 years to invent the telephone, 120 more to the World Wide Web, and then just 10 years to Google. Feel the acceleration?

You may say that acceleration cannot continue forever and progress eventually flattens into an S-curve. Maybe, yet we have not seen a slowdown in the history of our technological civilization. Human knowledge is the special thing that compounds: every tool we build accelerates the arrival of the next one. There is simply no reason to believe that intelligence is range-bound or that progress is destined to slow.

Let us now imagine that, by an incredible coincidence, two planets capable of supporting life were hatched on nearby stars in the same galaxy at exactly the same time.

The planets’ stars were identical as were the compositions of the planets and their atmospheres. The evolution of life on both planets started simultaneously and progressed at an incredibly similar pace, with a difference of less than 0.1%. By today, this minute difference in the speed of evolution would amount to a 3 million-year gap in progress.

In other words, it would have been an astounding coincidence to be just a few million years apart, in evolutionary terms, from a nearby civilization. However impossible the chance, what would this actually mean?

If our nearest neighbors were 3 million years behind us, they would be closer to chimpanzees than to Neanderthals. They would not have speech, could not use fire, and it would take them another million years to invent the stone ax. If their planet was orbiting the star closest to our Sun, Proxima Centauri, we could, within this century, observe them via tiny robotic spaceships, high above their planet. They would never know we existed.

Over time, this gap in development between us and our neighbors would widen. Over the next 1000 years, our neighbors would not change. Meanwhile, humans would most surely either cease to exist or become gods - gods who can conjure chimpanzees and Neanderthals by simply wishing them.

We would likely grant our neighbors a chance to uniquely develop and never attempt to communicate with them. They would not be able to even comprehend the concept of us, because it would take millions of years to develop speech, and then more time to conceive of gods. And should humanity choose not to have a neighbor, they would never see it coming or realize what it was, no more than dinosaurs understood the asteroid and the eruptions that did them in.

If the same nearest star, Proxima Centauri, harbored a planet identical to Earth on which life developed 0.1% faster, our “twin” species would be about 3 million years ahead of us today. “All-powerful immortal bodiless beings, pondering the questions where Einstein would not have understood a single line…” does not even begin to describe the gap we would likely face. We just cannot imagine that far into the technological future.

Given the accelerating speed of evolution and technological progress, our neighbors, 3 million years ahead of us, would either have ceased to exist long ago or became so advanced that the difference in intelligence between them and us could be akin to the difference between humans and oysters. How do you communicate with oysters? Or, more pertinently, how do we, oysters, send a message to humans?

Whether we are a million years ahead or behind our closest galactic neighbor, the intellectual gap would be both insurmountable and widening fast.

Could a slower-developing world allow us to meet? Yes, but only for a single instant. Both of us crafting our first stone axes or shooting our first arrows in the same century, out of billions of years of separate history. And then they fall behind and the commonality window closes. We meet for a brief moment in time, yet cannot shoot an arrow across the stars to communicate.

Now, let us just imagine that there is, in our tiny corner of the Milky Way galaxy, a civilization that is at exactly our level: iPhone 17 in 2025, Claude Opus 4.7 in 2026. And by the time you read this, both are already beginning to feel like old news, which is exactly the whole point.

For this impossible coincidence to mean anything, they would also have to be very, very close in distance, because nothing travels faster than the speed of light, and our galaxy is 100,000 light years across.

Assuming the two contemporary civilizations are in the same 0.1% of our galactic space, we would be, on average, about 1,250 light years away from each other. We would receive their first signal 1,250 years after they sent it. By that time, we could be dead or be gods, and the signal sent so long ago would likely be what the smoke signal is to us today. Even if we received it and cared to reply, their response would come back after another 2,500 years. Assuming they are still around and want to text us again. An information exchange with a 2,500 year delay. Fun.

To be able to communicate, two civilizations would probably have to be within roughly 10 light years, so information exchange would only take 20 years. The two civilizations would also need to be on roughly the same technological development level. The problem is there are roughly a dozen systems within 10 light years from us. And the chances of one of them having a civilization that is similar to our development level are none.

SETI listens for the faintest whispers of technology and even that search comes back empty. The most likely reason: there is simply nothing nearby, at our level, for us to hear. Under any reasonable assumptions about stellar distance and the speed of light, the odds of meeting a peer round to zero.

It is not difficult to see why we should be on roughly the same technological level, well under 200 years, development-wise. On Earth, 200 years ago marks the dawn of the industrial revolution in England, with the first locomotives about to start steaming around. Given the acceleration of progress, it would be harder for us to imagine the knowledge of 200 years forward than for Napoleon Bonaparte to imagine live videos from Mars and people habitually circling Earth in 90 minutes.

In essence, we could not contact a civilization that was 200 years behind us – think Napoleonic France. No radios and the fastest transport was a horse. And if we were to blast a signal toward a civilization that is 200 years ahead, they would most likely ignore us, to give us a chance to develop in our own unique way. Or, less magnanimously, they could choose to wipe us out.

Yet, even this tiny time gap, 200 years (vs. the 3,500,000,000 years that life has existed on Earth), would be widening quickly as progress accelerates: there were no fundamental advances in Imperial Rome’s culture, economy, tools, or weapons between 1 AD and 200 AD. By contrast, the 200-year difference between the 1800s (hello again, Napoleon Bonaparte) and today is insurmountable.

So much for talking to them. Even a neighbor a couple of centuries ahead or behind is beyond our reach and the gap is widening. We are not alone because the universe is empty – we are alone because anyone out there is forever isolated from us by distance, light speed, and the accelerating progress of their technology.

But this only answers Fermi’s first question. It does not address the harder one – if they are out there, why do we not encounter any spaceships, radio or infrared signals, half-built stars and Dyson spheres? Over billions of years, somebody should have left a mark large enough for us to see.

* * *

II.  The sky is silent

The assumption in Fermi’s question is that an advanced civilization must be large and hungry – swallowing its star, enclosing it in a Dyson sphere, reaching across the galaxy to expand. Yet look at us: all of humanity runs on roughly twenty trillion watts, which is about one ten-thousandth of the sunlight that falls on the Earth. The Sun shines more energy onto our planet in a single hour than our civilization burns in a year. Compared to everything the Sun radiates in every direction, our footprint is a few trillionths of one percent. Yet we grow smarter by the year now and AI is now accelerating our progress, while our global energy usage barely changes. Our capability growth is not tied to energy directly; it advances by accumulation of knowledge. A civilization can be a thousand years ahead of us and only use a tiny percentage of their star’s power.

The idea of stars wrapped in shiny solar panels may say less about what advanced intelligence requires than about a certain human and, let us be honest, distinctly male preoccupation with size. The real progress frontier runs inward, towards knowledge, and is size-independent, not “bigger and farther”.

My argument here is based on a scientific fact and I want to state it clearly. We know from thermodynamics that if we capture and use a lot of energy, we have to release the spent energy as waste heat. This would make a galaxy full of engineering marvels emit infrared radiation, whatever the actual engineering was. Astronomers looked for such infrared signatures, scanning roughly a hundred thousand galaxies for any signs of a civilization utilizing its stars. And found nothing. Precisely what a universe of efficient minds would look like.

Yet efficiency argument alone is not enough, because Fermi’s hardest question is not about energy – it is about colonization. It would take just one civilization, anywhere in thirteen billion years, choosing to spread at sub-light speed, to fill the entire galaxy within a few million years. So where are these colonists?

“A truly advanced species would spread across the stars.” Would they? That is not a law of nature. Expansion is the story of biological evolution on Earth and the hominid trajectory over a few million years: restless bacteria, plants, fish, reptiles, and, eventually, apes who crossed every ocean and settled every shore. Should we really project this primordial drive onto god-like future minds whom we cannot begin to imagine? Our own technological progress appears to prove the opposite: if progress keeps accelerating, then traveling away from home is a losing move. Fly for a few decades in your starship and by the time you arrive your home world has run so far ahead that you are now a living fossil. The light-speed lag (hundreds of years passed in the world you left while you only aged by decades) guarantees you can never again catch the frontier you left behind. For a civilization that accelerates, expansion is not glory – it’s self-sabotage. Flying away from your home star and its fast-evolving hive mind is a certain way to become an intellectual dinosaur.

To be fair, Fermi needs only one exception, one colonizing species in a galaxy. To answer his question, one has to assume that “staying home” is nearly universal. I believe it is: any species clever enough to master interstellar travel has to be intelligent enough to understand that interstellar travel is intellectual suicide.

There is one important exception: a civilization might spread not to get ahead but to survive – scattering small and continuously updated “backup” colonies as insurance against the asteroid or the nearby supernova. That kind of expansion does not worry about falling behind the frontier. Yet my intuition is that a civilization so advanced has more elegant insurance than seeding the galaxy with copies that always fall behind, every update arriving centuries out of date.

And there is another reason, the one that would explain the paradox even if everything above were wrong. The science-fiction writer Karl Schroeder sharpened Arthur C. Clarke’s famous line for exactly this argument: any sufficiently advanced technology is indistinguishable not from magic, but from nature. We would not recognize them even while staring straight at them.

If you enjoy visual illustrations, you could watch the Netflix documentary about the first encounters with previously uncontacted tribes in the Brazilian Amazon, First Contact. These tribes are exactly us, Homo sapiens. Their bodies and brains are identical to ours, and they share 99.9999% of our history, having been separated from the rest of civilization for a few thousand years.

But if we show that same tribe a valley that has been strip-mined to bedrock, they would never guess that humans did this. Other people, in their experience, leave a spear in the back, a hunted-out forest, a scout who does not come home. All the marks of other tribes at their own level. A force that swallows a whole valley is not people. It is an angry god or some strange face of nature. The one explanation they would never consider is “someone like us, only further along.” And so do we, in the 21st century, sweep the skies for the signatures we ourselves would broadcast at our current stage – narrowband radio, the infrared heat of a Dyson sphere, a star blinking behind some vast machine. That is our version of scanning the treeline for enemy scouts. A civilization a thousand years past us is as likely to send these signals as we are to communicate through smoke. Whatever an advanced species leaves behind, we assume “nature,” not “neighbor.”

Watching First Contact, you’ll realize that you may be able to exchange an imperfect greeting with tribe members through a chain of interpreters, and you may understand what they are talking about (or what the interpreters think they are talking about). The tribes have no written language of any kind and know no history older than 100 years. Yet they are exactly us, Homo sapiens. Now, visualize communicating with species from another planet who are either ahead or behind us by 1000 years - cavemen and gods, but no Star Trek.

* * *

So…

Where is everybody? Home, accelerating in solitude. Because travel is intellectual death.

And where are their drones and backups? Pick anything we call nature.

* * *

We are not alone because the universe is empty. We are alone because it is full of neighbors too far to reach and gods too advanced to recognize, everything we shrug off as nature. We better get friendly with our fellow humans – they are the only company we will ever have, as we take an incredible ride, together, alone in the universe.