The Strange Logic of Irrationality: How Humans Behave Against Their Own Best Interests

Nimit Sharma
4 min readSep 12, 2022

Why do people make choices that are against their best interests? The short answer to this question is that human beings aren’t always rational in their decision-making, which may sometimes be irrational. This idea can be explored through the study of cognitive psychology, and this paper will look at how humans behave irrationally, why they do so and how it impacts us all.

What is irrational?

Most of us like to think of ourselves as rational beings. We like to believe that we make decisions based on logic and reason. But the truth is, we’re often irrational. We make decisions based on emotions, biases, and past experiences. And even when we think we’re being logical, we may not be. For example, most people would prefer to live in a society where there are no restrictions on who can do what with their lives. Yet there are many societies throughout history where one’s life prospects were determined by social status, gender, or ethnicity. One might object that these restrictions made sense in those societies because they had limited resources and wanted to ensure all resources were used effectively. But this objection would also have made sense in many societies where people had abundant resources but still discriminated against certain groups, which suggests it wasn’t scarcity but some other motivation at work.

A Theory on why people act irrationally

Photo by Vera Arsic

There’s no question that people often act against their own best interests. But why? One theory is that we’re hardwired to be irrational. From an evolutionary standpoint, it makes sense that we would be. After all, if our ancestors had always made the rational choice, they probably wouldn’t have survived long enough to pass on their genes. According to this hypothesis, evolution favours those who do things like make impulse purchases or choose a high-calorie but low-nutrition lunch because such behaviours are generally pleasurable in the short term and usually don’t cause significant harm in the short term. In other words, humans tend to do things that feel good even when they know those choices will ultimately lead them down a bad path. The problem with this explanation is that it doesn’t explain why there are so many exceptions — people who regularly make decisions contrary to what evolution might suggest. The answer may lie in cognitive dissonance — the uncomfortable feeling we get when two thoughts clash with each other within us and produce tension as a result.

Examples of irrational behaviour in daily life

We’ve all seen examples of irrational behaviour in our daily lives. Maybe we’ve gotten angry at someone for no good reason or refused to listen to advice even though we know it’s good for us. Sometimes we make decisions based on our emotions instead of logic and end up regretting them later. For example, a person might spend money they don’t have to buy something they want but don’t need just because they’re feeling a strong emotion like desire. When the bill comes due and the debt collector starts knocking on their door, that person is left with nothing and will likely suffer emotionally as well as financially.

Consequences of irrational behaviour

Irrational behaviour can have far-reaching consequences, from personal relationships to financial decisions. When we act against our own best interests, we frequently end up hurting ourselves or those around us. Sometimes the consequences are minor and short-lived, but other times they are significant and long-term. Here are some of the most common negative consequences of irrational behaviour. E-cigarettes, for example, may cause disease, stroke, chronic obstructive pulmonary disorder (COPD), asthma attacks, sore throats and chest colds. Binge eating can also result in health issues such as high blood pressure and diabetes. Poor financial decisions can lead to bankruptcy and An unplanned pregnancy may add to the stress of parents in troubled marriages.

Ways to minimize irrational behaviours

1. Understand what triggers your irrational behaviour.
2. Step back and examine the situation dispassionately.
3. Think about the long-term consequences of your actions.
4. Choose the option that will create the most value.
5. Practice mindfulness to stay in the present moment.
6. Set goals and make plans to reach them.
7. Seek out others who can support you on your journey.
8. Ask for help when you need it, without shame or judgment.

Conclusion

We often think of ourselves as rational beings, but the truth is that we often act against our own best interests. This phenomenon is known as the law of irrationality, and it explains why we do things like procrastinate, make poor decisions, and let emotions rule our lives. Our brains are hardwired to behave in this way because it gives us an evolutionary advantage — survival depends on making quick judgments, not always waiting for all the facts. The good news is that this doesn’t have to be a bad thing — it can lead to behaviours like innovation and creativity. And there are ways to counter these tendencies by slowing down our decision-making process, weighing options carefully, recognizing when emotions are influencing our actions, and understanding how unconscious biases play into every decision we make.

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Nimit Sharma

QA By Profession. Enthusiastic , Explorer & Contributor.