Does technology develop in a linear fashion?

By Matthew Parish, Associate Editor

Tuesday 21 April 2026

The notion that the development of technology proceeds in a smooth, linear fashion is one of the most persistent illusions of the modern age. It is a comforting illusion—suggesting inevitability, predictability and control. We imagine a steady ascent: from the primitive to the sophisticated, from the inefficient to the optimised, from ignorance to mastery. Yet history, when examined with any seriousness, tells a different story—one of abrupt leaps, catastrophic regressions, forgotten knowledge and unexpected rediscoveries.

Technology does not advance along a straight line. It moves in fits and starts—sometimes racing forward, sometimes stalling, sometimes even turning back upon itself.

At the heart of this misconception lies a confusion between accumulation and progression. It is true that knowledge can accumulate. Written records, digital archives, and institutional memory allow societies to retain what they have learned. But the application of that knowledge—the translation of theory into practice—is contingent upon political will, economic resources, social stability and cultural priorities. When any of these falter, technological development can stagnate or collapse entirely.

The fall of the Western Roman Empire offers a classic illustration. Roman engineering—roads, aqueducts, urban sanitation—represented a high watermark of ancient technological achievement. Yet in the centuries following Rome’s collapse much of this infrastructure decayed, and the capacity to replicate it diminished. This was not because the underlying knowledge had vanished entirely, but because the social and economic structures required to sustain it had disintegrated. Technology proved not to be self-sustaining. It required a supporting civilisation.

Nor is regression confined to antiquity. The twentieth century—so often portrayed as an era of relentless technological advance—was punctuated by moments of disruption that revealed how fragile progress could be. The collapse of industrial capacity in parts of Eastern Europe following the dissolution of the Soviet Union led to a temporary loss of technical capability in several sectors. Skilled engineers emigrated, factories closed, supply chains fractured. Knowledge persisted—but its practical expression became attenuated.

Even in more stable contexts, technological development is rarely linear. Consider the history of aviation. The early twentieth century witnessed a rapid succession of breakthroughs—powered flight, jet propulsion, supersonic travel. Yet since the 1970s the pace of visible transformation in commercial aviation has slowed markedly. Concorde—once a symbol of the future—was retired without a direct successor. Modern aircraft are more efficient and safer, but not fundamentally faster. Progress has continued—but in a different dimension, less spectacular and more incremental. The line has flattened not because innovation ceased, but because its direction changed.

This pattern—rapid advance followed by plateau—is characteristic of many technological domains. It reflects the reality that innovation often depends upon the convergence of multiple factors. A single breakthrough—such as the invention of the transistor—can unlock decades of progress. But once the immediate possibilities have been exploited further advances become harder, requiring new paradigms rather than refinements of the old.

War too exerts a profound and unpredictable influence on technological trajectories. It can accelerate development with extraordinary intensity—yet it can also distort and misdirect it. The Second World War produced radar, nuclear weapons and early computing machines. But it also diverted vast resources into technologies that proved strategically irrelevant or morally catastrophic. The direction of technological effort was shaped not by rational optimisation, but by urgency, fear and the contingencies of conflict.

In the present war in Ukraine we observe once again the non-linear nature of technological evolution. The prominence of relatively inexpensive drones—many adapted from civilian designs—has disrupted traditional military hierarchies of power. Systems that were once considered peripheral have become central. Highly sophisticated and costly platforms have sometimes struggled to adapt to the realities of a rapidly changing battlefield. Innovation has not followed a predictable path—it has emerged from improvisation, necessity, and the decentralised ingenuity of individuals operating under pressure.

This raises a further point: technological development is not solely the product of formal research and development processes. It is also shaped by informal experimentation—by individuals and small groups who repurpose existing tools in novel ways. Such innovation is inherently unpredictable. It does not conform to linear models because it is not centrally planned. It arises at the margins, often in response to immediate problems rather than long-term strategies.

Economic cycles further complicate the picture. Periods of rapid growth tend to coincide with increased investment in research and development—fueling bursts of innovation. Conversely economic downturns can lead to retrenchment, reducing the resources available for technological experimentation. Yet downturns can also stimulate creativity, as constraints force individuals to find more efficient solutions. The relationship between economic conditions and technological progress is therefore neither straightforward nor consistent.

Cultural factors play an equally important role. Societies differ in their attitudes towards risk, failure and novelty. A culture that tolerates experimentation—even at the cost of occasional failure—is more likely to generate disruptive innovations. By contrast a culture that prioritises stability and conformity may favour incremental improvements over radical change. These cultural dispositions are not static—they evolve over time, influenced by political leadership, educational systems and historical experience.

One might also observe that technology sometimes advances by rediscovery. Ideas that were once explored and abandoned can re-emerge under different conditions. The concept of neural networks for example was investigated in the mid-twentieth century but fell out of favour due to computational limitations. Decades later, with the advent of more powerful computing resources and larger datasets, it returned to prominence—forming the basis of contemporary artificial intelligence systems. The line of development did not proceed smoothly—it looped back upon itself.

There is finally a psychological dimension to the illusion of linearity. Human beings have a natural tendency to impose order upon complexity. We construct narratives that make the past appear coherent and the future predictable. Technological progress, when viewed retrospectively, can be arranged into a sequence that appears logical and inevitable. But this is a reconstruction—an artefact of hindsight. At the time each step was uncertain, contested, and contingent.

To recognise that technological development is not linear is not to deny progress. It is to understand its true character. Progress is real—but it is irregular, uneven and fragile. It depends upon conditions that can change—and sometimes vanish.

This insight carries important implications for policy and strategy. It suggests that investment in technology should be diversified rather than narrowly focused—since it is difficult to predict which avenues will yield results. It underscores the importance of maintaining the social and institutional frameworks that support innovation—education, infrastructure, political stability. And it cautions against complacency—the assumption that progress, once achieved, will continue automatically.

In a world increasingly defined by technological competition—whether in artificial intelligence, energy systems, or military capabilities—such complacency would be a grave mistake. The future will not unfold along a straight line. It will twist and turn—shaped by forces that are often beyond immediate control.

Technology, like history itself, advances not as a march—but as a series of unpredictable movements. To navigate this terrain requires not only ingenuity, but humility—the recognition that progress is neither inevitable nor permanent, and that the line we imagine is, in truth, a far more complicated path.