AI, Deception, and the Catholic Defense of Truth

The Battle for the Human Mind

The first two articles in this series — “A Catholic Reading of Modern Military Deception” and “Can Catholics Accept Military Deception?” — examined The Future of Deception in War: Lessons from Ukraine through the lens of Catholic moral theology. We considered the report’s concern that Western militaries may be falling behind authoritarian powers in the use of deception, and we asked whether deliberate deception can be reconciled with the Church’s teaching on truth, lying, and the moral limits of war. That question is already serious enough, but the report raises another concern that deserves even closer attention because modern warfare is not only changing the tools of combat. It is increasingly changing the target.

Throughout history, military deception often focused on movement, position, logistics, and battlefield intention. Armies concealed troop concentrations, disguised supply routes, built decoys, misdirected scouts, or created false signs so enemy commanders would misunderstand where an attack was coming from. Those acts still require moral analysis, especially when they move from concealment into falsehood. But the report argues that deception is becoming broader than the older arts of camouflage, concealment, and misdirection. Increasingly, the goal is to influence how human beings perceive reality, evaluate information, assign trust, and make decisions.

For Catholics, this development should raise deep concern because the issue is no longer only whether an army can hide its movements or surprise an enemy. The issue is whether military systems are being designed to act directly upon the human mind by reshaping perception itself. That does not mean every influence operation is automatically immoral, and it does not mean military planners can ignore information warfare. But it does mean Catholics have to examine this new form of deception with more than strategic curiosity. We have to ask what happens when war treats the human capacity to know reality as a target to be manipulated.

A New Understanding of Deception

One of the report’s most revealing passages appears in its discussion of the psychology of deception. The authors write, “Deception seeks to exploit this paradox. It is ultimately founded on taking advantage of and then reshaping human behavior, decision-making, influence, trust, and the value placed on different kinds of information.” That sentence deserves careful reflection because deception is not being described merely as hiding one’s own intentions. It is being described as a method of acting upon another person’s behavior, judgment, trust, and relationship to information.

The report continues by saying, “The essence of military deception is changing the perception of an enemy commander, by misleading them or reinforcing an idea that is unproductive (or disastrous) for the force they lead.” This is where the moral issue becomes sharper. The decisive goal is not simply to prevent the enemy from seeing something. The goal is to shape how the enemy interprets what he sees, how he weighs what he hears, what he trusts, what he fears, and what he chooses to do. The battlefield is still physical, but the decisive terrain increasingly includes judgment.

That development should not surprise anyone who has watched modern war, politics, media, or technology develop over the last several decades. Power no longer operates only by controlling territory, weapons, roads, ports, and supply lines. It also operates by controlling interpretation. If a person can be made to doubt true evidence, trust false evidence, ignore real danger, or act upon manufactured fear, then his body may remain free while his judgment has been quietly captured. That is why deception aimed at perception is morally more serious than ordinary secrecy. It enters the interior space where reason is meant to encounter reality.

Catholics cannot analyze this by military language alone. Words like influence, perception, cognition, narrative, and decision advantage may sound neutral inside a strategic report. But those words touch moral realities because they concern the human person’s ability to know, judge, and act. A military planner may see perception as a battlefield variable. Catholic theology sees reason as part of the dignity of man.

Why Perception Concerns Catholic Theology

Catholic theology has always given great importance to reason because man is not an animal moved only by appetite, instinct, and force. The Book of Genesis teaches that man is created in the image and likeness of God, and that image includes the capacity to know truth, exercise reason, and make free moral choices. Human beings are not merely biological units to be moved across terrain. They are rational creatures made for truth, responsibility, and communion with God.

St. John Paul II made this connection central in Veritatis Splendor, where he taught that freedom cannot be separated from truth. Freedom is not mere choice, and it is not the ability to act upon whatever impression, impulse, or manufactured perception happens to dominate the moment. Real freedom depends upon the person’s ability to recognize the good and conform his action to truth. If perception is deliberately corrupted, freedom itself is weakened because the person is no longer choosing from within an honest encounter with reality.

This is why any deliberate attempt to distort another person’s judgment deserves careful moral scrutiny. War certainly involves conflict, secrecy, force, danger, and the grave duty of defense. A commander is not required to reveal his plans to an enemy. A nation is not obliged to provide an aggressor with the information needed to kill its citizens. But when the objective becomes the deliberate corruption of another person’s perception, Catholics should ask whether the act has crossed from legitimate defense into an assault on reason itself.

This question becomes harder because the person being deceived may be an enemy commander, soldier, analyst, or intelligence officer. Catholics do not have to pretend that enemy combatants possess a right to every truth useful to their cause. They do not. But even an enemy remains a human person, and even war is governed by moral limits. The fact that a man may be lawfully fought does not mean every aspect of his mind may be manipulated without moral concern. The Christian view of the enemy does not erase justice, but it also refuses to erase human dignity.

Trust Is a Moral Good

The report repeatedly returns to trust. Military deception, the authors explain, seeks to influence trust as well as the value people assign to different sources of information. That observation has implications far beyond the battlefield because trust is one of the foundations of civilization. Parents and children depend upon trust. Courts depend upon trust. Markets depend upon trust. Governments depend upon trust. The Church’s public witness also depends upon trust because evangelization becomes much harder in a society trained to assume that every claim is manipulation.

Trust is not gullibility. A mature society needs prudence, verification, legal safeguards, and honest skepticism toward power. But trust remains a real moral good because human life cannot function if every word, image, record, promise, and institution is assumed to be false until proven otherwise. When trust collapses, people do not become more rational. They often become more tribal, more suspicious, and more easily controlled by whatever source confirms their fear.

This is one of the hidden dangers of institutional deception. A state may develop deceptive techniques for foreign enemies, but habits do not always remain in their assigned compartments. The propaganda methods perfected during the twentieth century did not disappear when wars ended. Many passed into political life, advertising, public relations, ideological campaigns, and mass media. Technologies built for military influence often become tools of domestic persuasion because institutions rarely abandon useful tools once they have learned to use them.

Catholics should therefore be cautious when modern defense thinkers speak about trust as a variable to be manipulated. There may be narrow military contexts where an enemy’s misplaced confidence can be used lawfully, especially if the act involves concealment rather than false assertion. But a society that grows comfortable manipulating trust may gradually lose the ability to sustain genuine trust. Once people are trained to treat belief as a target, the temptation to manage citizens, voters, consumers, and believers in the same way becomes difficult to resist.

Artificial Intelligence Changes the Scale

The report argues that artificial intelligence will transform deception more dramatically than earlier technologies. The authors write, “Future military deception activities will occur at the intersection of behavior and data.” Later they explain, “Generative AI also offers many opportunities and risks. It permits the rapid generation of imagery, text, video, and even music (or equipment sounds) that might be used in military deception.” Those observations are sober from a military standpoint, but from a Catholic standpoint they should also sound like a warning about the future of truth in public life.

Artificial intelligence can now produce realistic photographs of events that never happened. It can imitate voices, generate convincing videos, fabricate documents, create synthetic witnesses, imitate official communication, and produce entire narratives that appear authentic to ordinary observers. For most of history, deception required labor, access, skill, and time. False documents had to be forged, false witnesses had to be coached, rumors had to move through human networks, and fabricated images required specialized effort. Artificial intelligence reduces the cost of falsehood dramatically.

That change affects moral responsibility because falsehood can now be produced at extraordinary speed and distributed to vast audiences almost instantly. A fake order can spread before verification catches up. A fabricated image can provoke outrage before anyone identifies it as false. A synthetic voice can imitate authority. A false narrative can become emotionally real before it is intellectually examined. The result is not simply more deception. It is deception operating at a scale and velocity that human judgment is poorly prepared to handle.

The report treats this primarily as an opportunity and challenge for military planners. Catholics should also see it as a challenge to the common good. A civilization cannot remain healthy if it loses confidence that evidence points to reality. Law, journalism, education, diplomacy, commerce, family life, and religious teaching all depend upon some shared confidence that truth can be known and communicated. Artificial intelligence does not create the modern crisis of truth, but it can accelerate it by making falsehood cheap, convincing, and constant.

The Crisis of Reality

Pope Benedict XVI frequently warned about a modern crisis of truth, especially in his criticism of relativism. His concern was not merely that people would disagree about moral questions. People have always disagreed. His deeper concern was that objective truth would be replaced by preference, utility, power, and the manipulation of desire. When truth is no longer received as something binding, it becomes something to be managed by whoever has the greater technological, political, or cultural force.

Artificial intelligence threatens to deepen that crisis because it weakens confidence in the ordinary signs by which people judge reality. Photographs once carried a certain evidentiary force. Voices once implied personal presence. Video once seemed harder to deny than written testimony. None of these was ever perfect, and all could be manipulated in limited ways. But generative artificial intelligence makes manipulation easier, faster, and more persuasive. The result may be a public culture in which people do not merely doubt particular claims. They begin to doubt the possibility of certainty.

That kind of skepticism damages public life. Justice depends upon truthful evidence. Journalism depends upon truthful reporting. Education depends upon truthful instruction. Democratic accountability depends upon citizens having some reliable access to what leaders have said and done. The Church’s evangelizing mission also depends upon confidence that truth is not an illusion. If people come to believe that every claim is only power speaking through technology, then the proclamation of truth itself becomes harder to hear.

This is one reason Catholics should not treat military deception as an isolated defense issue. The same technologies used to deceive an enemy commander can also be used to deceive populations, discredit witnesses, fabricate scandals, imitate clergy, manipulate elections, inflame ethnic conflict, or destroy reputations. Even when a particular battlefield use appears useful, the broader habit deserves scrutiny. A culture that normalizes synthetic unreality in war may find itself less able to resist synthetic unreality everywhere else.

The Human Person Is Not a Target

One of the report’s strengths is that it recognizes warfare increasingly concerns information, cognition, and decision-making. Military planners cannot ignore that reality, because enemies will not ignore it. Catholic moral analysis should not retreat into sentimental refusal to understand modern war. A state has real duties of defense, and ignorance is not a virtue when innocent lives are at stake.

But Catholics also cannot ignore the moral implications. The human mind is not merely another domain of military competition. The human person is created in the image of God. Reason is ordered toward truth, and freedom depends upon truth. When deception deliberately seeks to reshape perception, manipulate judgment, exploit cognitive weakness, and train another person to act on falsehood, it raises questions that cannot be answered by operational success alone.

The Church has always insisted that persons must not be treated merely as instruments for achieving desired outcomes. That principle applies in ordinary life, public policy, medicine, economics, and war. The enemy may be resisted. He may be disarmed. In some cases, he may be fought with lethal force under legitimate authority and moral limits. But he does not cease to be a rational creature. To treat his mind as raw material for manipulation is spiritually dangerous, even when done in the name of security.

This is not an argument for military helplessness. It is an argument for moral boundaries. Catholics can recognize legitimate secrecy, camouflage, and prudent concealment without accepting every technique that falls under the broad label of deception. They can accept national defense without accepting a view of war in which truth becomes only another variable to be engineered. The moral question is not whether Catholics understand the harshness of war. The question is whether war will be allowed to redefine the human person.

Looking to the Future

The report closes by urging democratic societies to adapt before authoritarian rivals widen the deception gap even further. Catholics should welcome serious reflection on national defense because a nation that cannot defend the innocent has failed in a basic duty of justice. But Catholics should also insist that military innovation remain subject to moral truth. The future will bring more artificial intelligence, more autonomous systems, more synthetic media, more sensor manipulation, and more operations aimed at the human mind. None of that removes the need for moral judgment.

The temptation to manipulate perception will grow because the tools will become more powerful and the costs will continue to fall. It will become easier to create false evidence, easier to imitate authority, easier to overwhelm attention, and easier to hide responsibility behind systems and procedures. The danger is not only that enemies will use these methods against us. The danger is that we may grow comfortable using them ourselves, and in doing so become less capable of seeing truth as sacred.

The Christian response cannot consist merely of better techniques. It must begin with renewed fidelity to truth itself. Catholics should be able to say that legitimate defense is necessary, that military prudence is real, that secrecy can be lawful, and that modern threats must be understood. They should also be able to say that the human mind is not just another battlefield to be conquered. It is ordered toward truth, and truth belongs first to God.

The final article in this series will ask whether a distinctly Catholic approach to military ethics can preserve both legitimate national defense and fidelity to the moral law in an age increasingly shaped by deception, artificial intelligence, and information warfare.

Sources for Further Reading

• Full Report: The Future of Deception in War: Lessons from Ukraine by Mick Ryan and Peter W. Singer (New America)
• Veritatis Splendor – St. John Paul II
• Article 1 in this series: “A Catholic Reading of Modern Military Deception”
• Article 2 in this series: “Can Catholics Accept Military Deception?”