10 Everyday Concepts That Are Shockingly Modern

Despite living in one of the most information-saturated times in history, many of us remain unaware of just how dramatically some of our most familiar ideas have changed over time. Concepts such as risk, intelligence, privacy, and even fun may seem timeless, but the modern meanings we attach to them are often surprisingly recent. Ancient people experienced all of these things, of course. Still, they frequently understood them through entirely different philosophical, religious, legal, or cultural frameworks.

This list explores how some of our most commonplace concepts evolved into forms that people from ancient China, Greece, Rome, or Mesopotamia might scarcely recognize.

Related: 10 Complex Psychological Mysteries of the Mind

10 Risk as a Measurable Force

This may sound strange, but our modern understanding of risk is fairly new. We’ve been gambling for thousands of years, but its association with mathematics only started during the mid-1600s. Before then, future outcomes were mostly left to things such as fate, the will of the gods, or fortune.

This is unusual for a couple of reasons. First, the Ancients loved to gamble and might seem like the kind of people who would have discovered probability sooner. Second, ancient Jewish philosophers had already developed notions of “chance” in the Talmud, and even so, there was no sustained attempt for hundreds of years to apply a methodology to it and discover probability.

We owe the transformation of risk from a matter of fate into something measurable largely to Blaise Pascal and Pierre de Fermat, two French mathematicians (and perhaps not so coincidentally, avid gamblers) who lived during the seventeenth century. Commissioned by a nobleman to solve the “problem of points,” a famous gambling dispute, the pair worked together and helped lay the foundations of probability theory (and with that, that gambling was mostly a sham). This discovery was revolutionary and became foundational for the development of free markets, modern medicine, air travel, and, in other words, modern civilization as we know it.^[1]

9 Intelligence as a Quantifiable Trait

This one may be hard to believe, but the modern idea of intelligence as a measurable trait was largely developed by psychologists in the late nineteenth and early twentieth centuries. In ancient Greece, there was no direct equivalent for treating mental ability as something that could be systematically measured and compared.

When Greek philosophers such as Aristotle spoke of reason and intellect, there was a spiritual quality to it. The concept of intellect (or nous) was sacred, seen as a faculty for perceiving spiritual truths, and reason was something that distinguished us from animals in a very all-or-nothing way.

This went unchallenged for hundreds of years until Charles Darwin suggested that all creatures of the earth possessed reason, not just humans; that it was only a matter of degree, with Darwin claiming that “there is no fundamental difference between man and the higher animals in their mental faculties.”

Darwin’s work later inspired psychologists in the late 1800s and early 1900s to develop modern versions of what’s today known as intelligence. Back then, it was often defined as “adaptability,” and with the boom of industrialization, there arose an incentive to quantify that adaptability in humans as IQ to better predict success in school and work.^[2]

8 Forgiveness as a Moral Ideal

Today, when we think of apologies, we think of the word “sorry,” perhaps paired with a sincere explanation for one’s behavior, and a hug between the two parties at the end. But way back when, in ancient times, this wasn’t so.

As David Konstan, an American academic, states in his book Before Forgiveness:

“I came to realize that not only had philosophers failed to examine the idea of forgiveness in ancient Greece and Rome […] but also that it was scarcely present as an idea or practice at all in classical culture.”

Konstan notes in his book that in ancient Greece, apologizing was more akin to anger appeasement than anything we can readily conceive of today: a genuine change of mind, or personal regret for wronging another. He argues that the modern notion of personal repentance and interpersonal forgiveness was far less central in classical culture than it would later become in Christian traditions. What many people today view as an ordinary moral expectation would have looked very different in much of the ancient world.^[3]

7 Normal as a Statistical Standard

The modern concept of what it means to be “normal” emerged surprisingly recently. The statistical use of the word developed during the nineteenth century when a French statistician named Adolphe Quetelet introduced the novel idea that human characteristics could also fall along the famous Gaussian curve, known colloquially as the Bell Curve, including traits such as height and hand span.

This helped popularize the idea that human traits could be measured, compared, and evaluated against statistical averages. In turn, it encouraged the belief that falling within a normal distribution for any given trait was something to be desired.

Safe to say, in ancient societies, the concept of a statistically “normal” or “average” human being would have been unfamiliar. The very act of thinking in this way presupposes that the world can be understood through large-scale measurement and mathematical analysis, an approach that only became widespread in the modern era.^[4]

6 The Modern Idea of Fun

People have always enjoyed games, celebrations, and recreation, but the modern concept of “having fun” as a worthwhile goal in itself is surprisingly recent. Shakespeare never used the word in its modern sense, relying instead on terms such as merriment, pleasure, or pastime. Early uses of “fun” often carried associations with trickery, foolishness, or frivolous behavior rather than wholesome enjoyment.

For much of European history, leisure was generally expected to serve some larger purpose, whether moral, religious, educational, or social. As literacy spread and industrialization created clearer distinctions between work and leisure, the modern idea of pursuing activities simply because they were enjoyable became increasingly accepted.

From there, society continued finding more and more ways to muck around, and what was once viewed with suspicion in some circles has now become woven into the very fabric of modern life. Today, entire industries exist solely to help people have a good time, something that would have seemed rather odd to many of our ancestors.^[5]

5 Progress as History’s Direction

This one is sure to ruffle a lot of feathers, but the modern belief that society should continuously improve itself is surprisingly recent. Prior to the early modern period, antiquity did not exactly see the future through a glossy lens of progress. The Ancients would likely have viewed the idea of society steadily advancing over time with some skepticism. In ancient Greece and Rome, and even Judea, there was often a cyclical view of human affairs, fate, and history that made it less likely for people to imagine that humanity could continually improve the world and maximize positive outcomes for all.

It was Sir Francis Bacon who helped formalize the modern idea of progress in his treatise The Advancement of Learning, suggesting that each generation should build upon the inventions, ideas, and discoveries of those who came before it.

Bacon went even further in the treatise to suggest what is most recognizable to modern minds today: the idea that organized society should be dedicated to improving quality of life, expanding knowledge, and advancing what he called “the relief of man’s estate.” Sound familiar?^[6]

4 Motivation as a Psychological Mechanism

Your understanding of motivation is probably very modern. Yes, really! The modern scientific understanding of motivation is surprisingly recent, with psychological theories of motivation only beginning to emerge in the late nineteenth century.

Before the Enlightenment period, it was broadly understood that behavior was learned and mostly the result of your own free will. This was influenced by Christian thought and the Aristotelian idea that humans were free, rational souls. Enter René Descartes in the seventeenth century, and we suddenly get the idea that maybe human behavior is partly nonrational, and that human actions could be mechanistic and instinct-driven, similar to those of animals. This was a strong challenge to the notion that humans were fully and consciously responsible for every aspect of their behavior.

Charles Darwin and English psychologist William McDougall took it a step further in the nineteenth and twentieth centuries, popularizing the idea of instinct-based motivation in humans and further eroding the primacy of the human will. Psychology today sees humans as responders to external stimulation and sensory pleasure, motivated both intrinsically and extrinsically rather than acting solely through conscious choice. The modern idea of motivation is therefore less about free will versus destiny and more about understanding the many forces that shape human behavior.^[7]

3 Emotions as a Scientific Category

The modern psychological understanding of emotions emerged only in the nineteenth century. Prior to that, when Middle English was still a thing, the term was connected to ideas such as “wits of the heart.” By the 1570s, it had expanded to mean “stirring up” or “agitation,” and by the 1650s it could refer to strong feelings. The word gradually evolved in meaning, but the modern scientific conception of emotions would not emerge until much later.

Thanks to the work of scientists such as Thomas Willis and Charles Darwin, emotions were understood by the 1880s as inherited responses rooted in evolution and bodily processes. This mechanistic understanding was a far cry from earlier interpretations, which often described feelings as “passions” or “accidents of the soul”—strong states of being that were moral, spiritual, or philosophical in nature rather than biological.

Today, we casually talk about emotions as measurable psychological phenomena. Yet for much of history, people understood the same feelings through a completely different lens. The emotions themselves did not change, but humanity’s understanding of them certainly did.^[8]

2 Privacy as a Legal Right

The modern legal concept of privacy is surprisingly recent. Across ancient Greece, China, India, Mesopotamia, and Rome, people certainly understood personal space, secrecy, and property, but they generally lacked the modern legal protections associated with an individual’s right to be left alone. Privacy was first articulated as a formal legal concept in 1890 by Harvard Law students Samuel D. Warren and Louis D. Brandeis.

The lack of this modern conception of privacy showed in everyday life. Roman toilets were famously known for having no separating stalls. Citizens and families bathed together without shame for centuries, and it was also commonplace for parents and children to share sleeping spaces in ways that would make many modern people uncomfortable.

The idea that individuals possess a legal right to control access to their personal lives is therefore much newer than many realize. What we take for granted today as a basic expectation would have seemed unusual, or even incomprehensible, in much of the ancient world.^[9]

1 Art as Something That Exists for Itself

“Art for art’s sake”—or l’art pour l’art in French—became a famous philosophy in nineteenth-century France as a pushback against the long-standing expectation that art should possess a moral, religious, educational, or social purpose. Parisian intellectuals argued for something that feels familiar to many modern audiences today: that true art exists on the merits of its own beauty and does not need to justify itself through instruction, devotion, or ideology.

As one of the movement’s most famous proponents, James McNeill Whistler, put it:

“Art […] should stand alone […] and appeal to the artistic sense of eye or ear, without confounding this with emotions entirely foreign to it, as devotion, pity, love, patriotism and the like.”

While this interpretation of art feels familiar today, it represented a major departure from centuries of thinking in which artistic works were expected to serve religious, moral, political, or educational purposes. The idea was revolutionary at a time when society was still adjusting to post-medieval notions of liberty, individualism, and secularism.

In a sense, the philosophy helped redefine what art could be. Rather than existing for society, the state, or the church, art could now exist simply because it was beautiful. That idea remains one of the most influential shifts in cultural history.^[10]