Occam’s Razor: The Power of Simplicity

Throughout history, countless hypotheses and principles have emerged. We’re sure you’re already familiar with many of them. But have you ever heard of a principle that suggests you shouldn’t overthink things or dig too deep into every little event? That principle is exactly what we call the Principle of Parsimony, or more famously, Occam’s Razor. So, what exactly is this Occam’s Razor?

Occam’s Razor or the Principle of Parsimony

Occam’s Razor is a principle that encourages us to find the most likely cause of an event without making too many assumptions. For example, if the doorbell rings, the most logical assumption is that someone is standing on the other side. Sure, you could overthink it and convince yourself that a dog rang the bell, or that a freak gust of wind hit the button just right—but those are far less likely. In this case, Occam’s Razor tells us that the simple explanation (a person at the door) is the one we should bet on.

In short, this principle suggests that to solve a problem, we should avoid jumping to complex conclusions and instead follow the path that the available evidence points to most directly. If you’re faced with two possible answers, this principle tells you to choose the one that requires the fewest assumptions and variables.

Does Occam’s Razor Always Lead to the Truth?

Of course, we have to keep in mind that this principle doesn’t guarantee the “correct” answer. It simply offers a practical way to approach problems. There might be a hidden cause that seems less likely at first glance. For instance, a doctor might diagnose a patient with a common, simple ailment because it’s the most logical explanation, but there could still be a more serious underlying condition. Or, yes, it actually could have been a dog at your door. Simply put: Occam’s Razor is a rule of thumb, not a law of truth.

That said, even if the principle points you toward the simplest solution, it doesn’t forbid you from investigating further if that solution feels shaky or if there are other possibilities worth considering. If an option that requires more variables has stronger evidence to back it up, by all means, consider it—but if not, the simplest path is usually the best one to take.

Parsimony in Daily Life

It’s obvious that we use this principle instinctively in our everyday lives. If the TV suddenly turns off, your first thought isn’t that the internal hardware has failed; you assume the power went out. Only if you notice the lights are still on do you start to suspect the TV itself is broken.

Even in medicine, doctors typically start with the most likely diagnosis. If you go to the doctor with a headache, they might list a dozen simple reasons, but they won’t immediately jump to the conclusion that it’s a brain tumor. There just isn’t enough evidence to support that yet. In this sense, Parsimony is a highly useful tool that works for us most of the time. Just remember: “useful” and “always true” are two very different things.

A Word of Caution!

This is where the “Chatton Principle” comes into play. John of Chatton, an English philosopher, offered a counter-warning regarding Occam’s Razor. He argued that while the principle is a practical and useful guide, taking it to the extreme can lead to critical errors. We have to be careful not to over-rely on it. If you ignore other possibilities too aggressively, you might be blindsided by a major disaster. Think about the early days of the pandemic: if more people had entertained the possibility of a global outbreak early on and acted accordingly, the case numbers might have been lower, and the crisis might have been contained much sooner. In that instance, sticking strictly to the “simplest” assumption was a mistake.

In short, Chatton’s warning serves as a reminder that Occam’s Razor doesn’t always lead to the right conclusion.

In Conclusion…

All in all, Occam’s Razor is a practical, effective method that saves us from wasting time and unnecessary mental gymnastics. It provides us with a shortcut, but if you aren’t careful, it can also lead you astray. That’s why thinkers like Chatton suggest that while you follow the most likely path, you should always keep one eye open for the alternatives.

References and Further Reading

Originally published in Turkish at Doğa Filozofu.