Home Theories Tesler's Law

Tesler's Law

Reviewed by expert Scientifically proven

Tesler's Law, also known as The Law of Conservation of Complexity, is a cognitive bias that states that in any system, there is a certain amount of complexity that cannot be reduced or eliminated. This means that as we simplify one aspect of a system, we inevitably increase the complexity of another aspect. Designers often struggle with finding the balance of complexity and simplicity, but understanding Tesler's Law can help them make informed decisions about what to prioritize in their designs.

Table of contents:
  1. What Is Tesler's Law?
  2. How Does Tesler's Law Apply to Website Design?
    1. Simplifying Forms
    2. Streamlining Navigation
    3. Reducing Cognitive Load
  3. Conclusion

Sure, here's a blog post for you:

Understanding Tesler's Law: What It Is and How to Use It in Website Design

In website design, the ultimate goal is to make the user experience as easy and efficient as possible. But in order to achieve this goal, it's important to understand the cognitive biases that can influence user behavior. One such bias is Tesler's Law, also known as the Law of Conservation of Complexity.

What Is Tesler's Law?

Tesler's Law is named after Larry Tesler, a computer scientist who worked for Apple and other notable tech companies. The law states that "for any system there is a certain amount of complexity which cannot be reduced." In other words, every system, whether it's a website or a software program, has a certain level of inherent complexity that cannot be eliminated.

According to Tesler, this complexity should be carefully distributed throughout the system so that users can complete tasks as easily and intuitively as possible. The goal is to make the most important tasks as simple as possible, while still allowing for the more complex tasks that may be necessary.

How Does Tesler's Law Apply to Website Design?

In website design, Tesler's Law can be applied in a number of ways. Here are a few examples:

Simplifying Forms

One of the most important areas where Tesler's Law can be applied is in form design. Forms are a necessary part of many websites, but they can be very complex and time-consuming to fill out. By simplifying the form as much as possible, you can reduce the amount of time and effort required by the user.

This might involve breaking the form down into smaller sections, using dropdown menus instead of text fields, or auto-filling data for the user wherever possible. The goal is to make the form as easy and intuitive to use as possible, while still collecting all the necessary information.

Streamlining Navigation

Another key area where Tesler's Law can be applied is in navigation design. Every website has a certain level of navigation complexity that cannot be eliminated. However, by carefully designing the navigation system, you can make it as simple and intuitive as possible for the user.

This might involve using clear labels for each menu item, minimizing the number of clicks required to access important pages, or using breadcrumbs to help the user keep track of their location within the website. The goal is to make it easy for the user to find what they're looking for, without overwhelming them with too many options.

Reducing Cognitive Load

Finally, Tesler's Law can be applied to reduce cognitive load on the user. Cognitive load refers to the amount of mental effort required to complete a task. A website with too much complexity can easily overwhelm the user and make it difficult for them to complete simple tasks.

To reduce cognitive load, it's important to design the website in a way that makes it easy to scan and process information quickly. This might involve using clear and concise headlines, breaking up text into smaller paragraphs, or using visual cues to highlight important information. The goal is to make it easy for the user to find what they need, without making them work too hard to do so.

Conclusion

Tesler's Law is an important cognitive bias to consider when designing websites. By carefully distributing complexity throughout the system, you can create a user experience that is intuitive, efficient, and easy to navigate. Remember to keep the most important tasks as simple as possible, while still allowing for the more complex tasks that may be necessary. By doing so, you'll create a website that users will love to use again and again.

A new cognitive bias in your inbox every week

You'll get to learn more about CRO and psychology. You'll be able to take experimenting to a whole new level!

* We send our mails on Monday morning btw.

Will you use psychology for your experimentation process?

Are you curious about how to apply this bias in experimentation? We've got that information available for you!

Join over 452+ users

  • Lifetime access to all biases
  • Filter on metrics, page type, implementation effort
  • More examples and code for experimentation

Choose your subscription!

Pay with Stripe

Lifetime deal PREMIUM

Get access to the search engine, filter page, and future features.

€499.00
I want this

Lifetime deal

Get access to the search engine and filter page.

€149.00
I want this

Do you think you know enough about CRO?

Join our monthly mailing to continue learning more and more about CRO and psychology.