There's an image I can't get out of my head: a train hurtling through the fog, its driver certain the tracks are endless, while the passengers in the dining cars discuss what the next station will be like. No one is looking ahead. Everyone is looking at each other. This is more or less how I see our conversation about technological progress.
We are used to thinking of progress as something unstoppable – like the tides or inflation. It just happens. Every few years, something new emerges that makes the previous generation of technology seem laughable and touching, like a child's drawing on the refrigerator. My old copies of Popular Mechanics from the end of the last century are full of confident prophecies about what «the year 2000» would be like: flying cars, underwater cities, breakfast in a pill. Not a single prediction came true literally. But none were entirely absurd either – the direction simply turned out to be different. Progress went in a direction no one was looking.
And so, the question that occupies my mind is this: does this train have a final station? Or at least a wall it's one day going to smash into at full speed?
The Laws of Physics as Silent Censors
Let's start with the most obvious and most «boring» limiter – physics. Not the physics from textbooks with pictures of pendulums, but the one that resides at the foundation of reality and, from time to time, tells engineers a quiet but firm «no.»
Moore's Law – almost a religious doctrine of technological optimism – stated that the number of transistors on a microchip doubles roughly every two years. For decades, it worked. Computers became smaller, faster, cheaper with almost metronomic predictability. But today's transistors are measured in single-digit nanometers – sizes comparable to a few atoms. Beyond this lies quantum mechanics, where electrons cease to behave like obedient particles and start acting like poets: tunneling through barriers, ignoring boundaries, doing whatever they please. The physical limit of classical semiconductor electronics is real and tangible. The industry is already seeking workarounds – 3D chip stacking, new materials, quantum computing – but this is no longer a continuation of the old road; it's the construction of a new one.
The same goes for energy. Solar panels are hitting the theoretical limit of efficiency – about 33% for a single-junction cell (the Shockley-Queisser limit). The best commercial solutions are already approaching this figure. Nuclear fusion has loomed on the horizon for decades as the promise of limitless energy – and time and time again proves to be further away than it seemed. The speed of light is a hard ceiling for information transfer and, if we ever fulfill our interstellar ambitions, for everything else, too.
Physics isn't cruel. It's just honest. And in that honesty, there's something almost comforting: the world is built on rules, not on whims.
Resources: The Planet as a Finite Warehouse
The second silent censor is resources. Not oil (we've understood that one for a long time), but something more interesting.
Modern technological civilization depends on a group of elements most people don't even know exist. Rare-earth metals – neodymium, dysprosium, terbium, lutetium – sound like characters from a fantasy novel, but they are real and critically important. Without neodymium, there are no powerful permanent magnets, and without them, no electric motors in EVs and wind turbines. Without indium, no transparent conductive coatings on touchscreens. Without lithium – at least in its current application – no batteries with the energy density we've grown accustomed to.
The deposits of these elements are concentrated in just a few places on the planet. Their extraction is environmentally destructive. Their reserves are finite – not in an abstract sense, but in the sense of very specific numbers, after which scarcity sets in. One could argue: humanity will find substitutes, recycle, invent new chemistry. Perhaps. But «perhaps» is not a guarantee; it's a wager. And until that wager pays off, technological progress in certain areas is hitting a geological wall.
There is another resource, one less talked about: attention. Human attention as a collective resource. Science moves forward thanks to minds that spend years on narrow problems. But the number of minds is finite, time is finite, and the research front is expanding faster than reinforcements can arrive. Physicist John Gorn once calculated that the «easiest» discoveries have already been made – each subsequent generation of scientists tackles a higher bar with a smaller chance of a breakthrough per unit of time. This isn't a catastrophe, but it is a slowdown. Quiet, imperceptible, like an autumn day when the darkness begins to fall just a little earlier.
Complexity as a Trap
There is another wall, one that is rarely spoken of aloud because it is inconvenient. Let's call it the complexity wall.
The further technological development goes, the more complex the systems we must build, maintain, and understand become. A modern commercial airliner contains millions of lines of code. A modern operating system, tens of millions. The financial infrastructure of a major bank is something no single person can fully comprehend. We are building systems we only partially understand and cross-breeding them with one another, creating something that no one understands at all.
This is not an exaggeration or a panic. It is an engineering reality. The theory of complex systems tells us that upon reaching a certain threshold of complexity, systems begin to behave unpredictably – not because they are «broken», but because their behavior is emergent, arising from interactions rather than being directly programmed. Financial crises, cascading blackouts, the unexpected behaviors of large language models – these are all symptoms of the same disease: we have created something that surpasses our ability to control it.
And here is the paradox: to manage this complexity, we create even more complex systems. Artificial intelligence to oversee artificial intelligence. Algorithms to monitor algorithms. A Matryoshka doll of opaque processes, each layer slightly less comprehensible than the last. This isn't progress at a dead end – it's progress digging its own grave while simultaneously building ever more sophisticated shovels.
Human Nature: Our Most Devoted Brake
But to be honest, physics, resources, and complexity are all external constraints. They exist independently of us and operate by their own laws. Far more interesting – and far more terrifying – is what lives within.
We humans are brilliant at inventing technologies and catastrophically bad at handling them. Not in a technical sense, but in the sense of wisdom, foresight, and the ability to think about consequences beyond the next quarter or the next election.
History is full of examples of technologies created with good intentions that became tools of control, destruction, or simply monstrous inefficiency. Chlorofluorocarbons were a brilliant invention – non-flammable, non-toxic, stable. The perfect refrigerant. No one thought about the ozone layer until it started to disappear. For decades, leaded gasoline was pumped into car engines worldwide before the obvious was acknowledged: lead in the atmosphere is a bad idea. We are not villains. We are just very bad at seeing around corners.
And here, progress runs up against its most inconvenient limiter: ourselves. Our cognitive myopia. Our tendency to value short-term gain over long-term survival. Our inability to agree on anything globally until disaster knocks on the door loud enough.
Technology develops quickly. Institutions, slowly. Ethics, more slowly still. Wisdom, slowest of all. And in this gap between speeds, most of our problems reside.
Is There a «Right» Kind of Limit?
This is where I risk sounding strange. Because I want to ask a question that is considered almost indecent in the polite society of techno-optimists: what if a limit is a good thing?
Not in the sense of «let's stop everything and go back to campfires and manual labor» – that's a romantic foolishness only affordable to those who have never depended on insulin or a pacemaker. But in another sense.
Perhaps the existence of limits – physical, resource-based, ethical – is not a tragedy, but a structure. A framework within which progress is forced to become not just fast, but smart. Not just powerful, but careful. An infinite resource demands no frugality. Infinite power demands no wisdom. It is finiteness that forces us to think.
Look at the history of architecture: the most sophisticated structures were born not when materials were abundant, but when they were scarce. Gothic cathedrals are not a product of a surplus of stone, but of a deficit of stone, solved with genius: vaults, buttresses, ribs. Beauty as a response to limitation.
Perhaps the future of technology is not endless acceleration, but something more like jazz: improvisation within a structure, virtuosity within constraints, depth instead of speed.
What Can Actually Stop Progress
If we set aside the poetry and speak plainly, what can really slow or stop technological development?
- Energy Collapse. Technologies devour energy with an appetite that is growing faster than our ability to produce it cleanly and cheaply. Data centers, neural network training, cryptocurrency mining – all of this requires electricity on a scale that would have seemed absurd just twenty years ago. If the energy transition cannot keep up with demand, something will have to give.
- Loss of Trust. Technology exists in a social context. If society loses trust in technological institutions – whether due to real scandals, manipulation, or simply accumulated anxiety – it creates regulatory and cultural pressure capable of halting entire fields of development. History offers examples: nuclear energy in several countries was effectively frozen after Chernobyl not for physical reasons, but for social ones.
- Fragmentation. The world is becoming less global than it seemed during the heyday of the internet. Technological ecosystems are fragmenting, standards are diverging, and knowledge no longer flows freely across borders. Science moves faster when scientists from different countries work together. When they work in isolation, the pace slows.
- Ecological Collapse. Not as a distant boogeyman, but as a very concrete destabilizing factor: supply chain disruptions due to extreme weather events, degradation of agricultural systems, mass migrations – all of this reallocates resources and attention away from invention and toward survival.
- Indifference. This sounds flippant, but I say it in all seriousness. One of the main drivers of technological progress has always been human curiosity. If culture, education, and the economy stop producing people who are interested in understanding how the world works, progress will slow more quietly and imperceptibly than under any other scenario. Simply because there will be no one left to ask the next question.
Between the End and the Beginning
I began with a train in the fog. Allow me to end a little differently.
Perhaps the limit of technological progress is not a wall or an abyss. Perhaps it is a fork in the road. A point where one kind of progress ends and another begins – less spectacular, less like a firework display, but more profound. Progress not in making things faster and more powerful, but in making them wiser.
The history of science knows such moments. Newtonian mechanics seemed to be an absolute system describing everything – until phenomena appeared that it could not explain. And what came next was not a catastrophe, but Einstein. Not the end of physics, but its expansion to a scale that simply couldn't fit in the mind before.
Perhaps we are now living at the end of one era of progress – the era of exponential growth in power, speed, and volume – and on the threshold of another, which does not yet have a name. An era where the measure will not be what we can do, but what we choose to do.
It's frightening. Of course, it's frightening. The unknown always frightens more beautifully than anything else.
But in this fear, if you listen closely, lives something akin to hope.
