# Why We Build Lists: Simplifying Complexity

Q: Why do people build lists?

A: To organize the world around them.

People making and discussing lists. Scuola di Atene - Raffaello Sanzio da Urbino
People, probably making and discussing lists.
Scuola di Atene - Raffaello Sanzio da Urbino.

The world is complex and often appears chaotic. Language, too, can be imprecise, mirroring the intricacies of reality itself.

We need help.

From early human records detailing daily routines to clay tablets – used extensively for trade records, inventory lists, and administrative tasks(including taxes), detailing goods, quantities, and transaction agreements more than 5000 years ago - lists have long been tools that help us make sense of life, both individually and collectively.

So we simplify things by condensing vast, nuanced information into simplified points, we create lists that allow us to manage our thoughts, prioritize actions, and collaborate with one another. Lists prevent us from being overwhelmed by the layers of stories and data that shape our existence. They distill complexity into actionable items that help us when we need to stay focused and avoid getting lost in details.

In our day-to-day lives, shoppers rely on simple lists to streamline their errands. Productivity enthusiasts craft task lists to boost efficiency. Collectors meticulously record their items. And the curious minds who thrive on facts keep lists of trivia and information, delighting in the organization of knowledge.

Yet, there are some of us though that love lists more than the rest. It goes beyond simply creating lists—and focus on capturing specific attributes of the items being cataloged to make it easier to organize and distill large sets of data. By breaking down details into clear, structured elements, these lists allow individuals to analyze, compare, and draw insights efficiently.

Mathematicians love lists of numbers. Chemists have cataloged all known elements into the periodic table, where each element is described using consistent properties such as atomic number, mass, and reactivity (yep, they even made a list of everything we’re made of). Botanists classify plants by attributes like leaf shape, growth habits, and ecological role. Biologists create taxonomies that list organisms based on shared characteristics. These structured lists transform vast amounts of data into manageable, searchable, and understandable formats, making complex knowledge accessible.

Among all people, I'd argue software engineers love lists more than other people do. In fact we love lists so much, we further organized them into many lists of types of lists—talk about dedication. Yes, there is something funny about the many ways we use lists everyday without quite thinking about it. It’s nearly impossible to write code without using them in one form or another.

But it doesn’t stop there. The real magic is in how we use our love for lists to create tools that help everyone—not just programmers—build, manage, and make sense of their own lists. Whether it’s organizing data, automating tasks, or building apps, lists are at the heart of what we do.

And it’s not just individuals making sense of their thoughts and actions—our entire economy and major collaborative projects, whether in corporations or scientific endeavors, rely on lists to organize work and manage interactions effectively. From the development of railroads and electrification to the car assembly line, space exploration, the advent of computers, the Internet, the Human Genome Project, and now Artificial Intelligence, lists have been at the core of systematically organizing knowledge and guiding actions. Each of these advancements represents a step forward in how we structure information and coordinate complex efforts on an unprecedented scale.

So, yes, lists might be simple, but their impact runs deep in the ways we organize, simplify, and improve our world.