In this blog post, we’ll explore how the development of weapons has influenced the formation of human civilization and the advancement of science and technology, as well as the significance of weapons in human history.
Weapons are among the inventions that have had a profound impact on human history. Even today, the question of whether North Korea possesses nuclear weapons is treated as a critical security issue by the international community. Currently, there are countries that possess nuclear weapons, and the international community is working to limit their proliferation through agreements such as the Nuclear Non-Proliferation Treaty (NPT). This is due to the immense destructive power of nuclear weapons. Although countless wars had taken place even before the advent of nuclear weapons, the danger they pose had a far more profound impact on the world after the atomic bombs were dropped on Japan during World War II. Since then, the international community has established various treaties and systems to limit the proliferation of nuclear weapons, and this has become a prime example in human history of efforts to restrict weapons on an international scale. So, when did humankind begin to make weapons?
Humankind has survived by using tools and weapons for a very long time. Throughout the progression from the Stone Age to the Bronze Age and the Iron Age, weapons continuously evolved, and these changes are deeply intertwined with the development of civilization. I believe that the development of weapons drove the changes of the times.
As humans began using weapons, they gained an advantage over other animals. In the Stone Age, the dawn of human history, people hunted using stones, relying on this to survive by hunting other animals. It would have been difficult for humans to defeat predators such as tigers or lions relying solely on physical strength. However, by using weapons, humans were able to rise to the top of the food chain.
During the Paleolithic Era, sharply chipped stones were used as weapons, and in the Neolithic Era, stones were ground more precisely to create various tools and weapons. Later, during the Bronze Age, people used bronze—which is harder than stone—to make weapons, and these weapons were employed in conflicts and wars between tribes. In the Iron Age, iron—which is even harder than bronze—was used to create various weapons such as bows, swords, and spears, greatly improving their effectiveness.
Subsequently, with the practical application of gunpowder, new weapons like guns and cannons emerged, and the scale and destructive power of warfare increased significantly compared to before. Subsequently, through World War I and World War II, weapons that had previously been difficult to imagine—such as tanks, fighter planes, bombs, and nuclear weapons—were developed.
The reason we can say that the development of weapons changed the course of history is that various tools and farming implements also advanced alongside the weapon-making process. These technological advancements greatly increased productivity. During the Stone Age, people had to hunt and gather to survive, making it difficult to accumulate sufficient food supplies. However, as various tools evolved alongside weapons, humans were able to transition to an agricultural society where they directly cultivated plants and raised animals; as production increased, the population also grew significantly.
After the formation of agricultural societies, conflicts among people became more frequent, and weapons continued to evolve as people sought to secure more land and wealth. Ultimately, the evolution of weapons—from stone to bronze, iron, and gunpowder—occurred in tandem with the progression of history, and these changes became key criteria for distinguishing different eras. It is believed that humanity created weapons to survive and, through the advancement of weapons, has built increasingly sophisticated societies.
The development of weapons also brought about major changes in the nature of warfare across different eras. Since there are almost no records remaining from the Stone Age, we cannot know exactly what warfare was like at that time, but it is presumed that people fought using stone and wood, and the loss of life was likely relatively low. As we moved into the Bronze and Iron Ages, the scale of warfare gradually increased, and numerous wars appear in historical records. For example, there were instances, such as the war between the Sui Dynasty and Goguryeo, that resulted in massive loss of life.
However, in those days, the scale and duration of wars often caused greater damage than the destructive power of the weapons themselves.
Later, with the widespread use of gunpowder, the performance of weapons advanced by leaps and bounds, and the scale of warfare expanded to a degree incomparable to anything before. In particular, World War I and World War II are regarded as the largest wars in human history, with World War II resulting in massive casualties—tens of millions of lives lost.
As weapons advanced, the scale of warfare grew as well. So why do wars occur? War can ultimately be described as a form of conflict on a larger scale. Conflicts arise both to gain more and to defend oneself. Even before the emergence of humankind, all living beings have competed and fought with other living beings to survive. And only those that survived that process were able to continue existing.
As mentioned earlier, humans have survived competition with various other species and have now become the beings with the greatest influence on Earth. Ultimately, conflict is something that inevitably arises naturally in the pursuit of one’s own interests and survival. Consequently, war has recurred throughout history. Even today, regional conflicts and armed clashes continue in various parts of the world, and South Korea remains in a state of ceasefire, locked in a military standoff with North Korea.
World War I and World War II brought immense terror to humanity. If a world war were to break out today, weapons far more powerful than those of the past would likely be used, and the damage would be beyond imagination. In particular, the existence of nuclear weapons and weapons of mass destruction has reached a level capable of threatening all of humanity. Looking at this alone, some argue that the advancement of weapons has posed a tremendous danger to humanity, and that if weapons continue to evolve, they could ultimately lead humanity to extinction. Their argument is that if weapons more powerful than nuclear ones continue to be developed, and the cycle of creating new weapons to counter them repeats, weapons will eventually destroy humanity.
However, I believe that the development of weapons itself is not the problem; rather, the problem lies with those who use them. Through the development of weapons, humanity has also advanced science and technology. The nuclear technology accumulated during the development of nuclear weapons is currently being utilized in nuclear power generation. Furthermore, radar technology—developed during World War II to detect enemy aircraft—has since contributed significantly to the advancement of electronics and communications technology and has influenced the development of various other technologies, such as microwave ovens and medical imaging equipment (MRI). Computers, too, advanced significantly through research conducted during the war to perform complex calculations.
Not only did science and technology for weapons development drive progress, but war itself also spurred the advancement of various scientific and technological fields. Even chewing gum, which we use commonly today, has a historical background tied to war. Of course, modern chewing gum has evolved using natural chicle and synthetic rubber, but food shortages during wartime and research into alternative materials also played a role in the development of the chewing gum industry. Furthermore, the establishment of a mass production system for penicillin during World War II contributed significantly to saving the lives of countless wounded soldiers. In this way, efforts to develop more powerful weapons and research aimed at defending against them ultimately had a considerable impact on the advancement of science and technology. Additionally, various technologies and inventions emerged as a result of war.
I believe that the development of weapons has had a certain influence not only on science and technology but also, in fact, on reducing the occurrence of large-scale wars. As the destructive power of weapons increased, so did the fear of war, and because of this fear, nations found it difficult to rashly choose large-scale warfare. Since World War II, having experienced the horrors of war, the international community has established various international treaties and arms control systems. Thanks to these efforts, mega-conflicts like world wars have not occurred again to this day.
I believe the decline in warfare holds great significance in human history. War has existed since before the emergence of humankind as part of the struggle for survival. However, today humans have gained overwhelming influence over other life forms on Earth, and the fact that large-scale wars within humanity are decreasing can be seen as a process through which humanity is gradually developing a sense of community.
We now live in an era where the misuse of weapons by a single individual could endanger all of humanity. Furthermore, advancements in weaponry have made it far easier to take a human life than in the past. Yet, I believe that by experiencing these risks, humanity has also come to appreciate the value of life even more deeply.
Therefore, attempting to halt the development of weapons or eliminate them entirely could amount to rejecting the scientific and technological progress and the conveniences of civilization that humanity has achieved thus far. Thanks to advances in science and technology, we can cook food with the push of a button, easily access information from around the world, and enjoy the benefits of various cutting-edge technologies.
Based on these scientific and technological advancements, humanity is currently exploring the universe beyond the solar system and expanding our understanding of space. Although humans currently live only on the planet Earth, we cannot completely rule out the possibility that human-like lifeforms exist somewhere in the universe. I believe that a certain level of weapons and defense capabilities is necessary as a precaution for the future. Furthermore, weapons are necessary for self-protection. However, what matters most is not the weapons themselves, but how they are managed and used. I believe it is of the utmost importance that individuals and nations using weapons establish appropriate regulations and responsible systems to ensure their proper use.
