2 Why Plain Text Endures
“The best technology is often the one that quietly refuses to become obsolete.”
Technology changes at a breathtaking pace.
Over the past fifty years we have seen magnetic tapes give way to floppy disks, floppy disks replaced by CDs, CDs supplanted by flash drives, and local storage increasingly complemented by cloud services. Software comes and goes. Companies rise, dominate markets, and sometimes disappear altogether.
Yet through all these changes, one technology has remained remarkably constant: plain text.
Files created decades ago can still be opened today. A note written on a Unix workstation in the 1980s is often just as readable on a modern laptop. Source code written generations ago can still be examined with today’s text editors. Few digital technologies can claim such longevity.
Why has plain text endured when so much else has become obsolete?
The answer lies in its simplicity.
2.1 Simplicity Is Strength
Plain text is not burdened by unnecessary complexity.
A plain text file stores only characters. It makes no assumptions about fonts, page layouts, graphics, or operating systems. Because it records only the essential information—the words themselves—it avoids many of the problems that plague more complicated file formats.
Simple technologies are easier to implement, easier to understand, and easier to preserve.
This principle appears throughout engineering. The fewer moving parts a machine has, the fewer opportunities there are for something to break. Plain text follows the same philosophy in the digital world.
Its simplicity is not a limitation; it is a source of resilience.
2.2 Independence from Software
Many digital documents depend upon the software that created them.
If the program disappears, the document may become difficult or impossible to open. Countless proprietary file formats have suffered this fate. Some require software that no longer exists, while others rely on undocumented internal structures that only their creators fully understood.
Plain text avoids this problem.
Almost every operating system includes software capable of opening plain text files. Hundreds of editors exist, from the simplest notepad applications to sophisticated development environments. None of them owns the format.
Your documents remain yours.
This independence frees writers, programmers, and researchers from becoming locked into a particular application or vendor.
2.3 A Universal Language for Computers
Computers differ enormously in their hardware and operating systems, yet they all understand text.
Whether you are using Linux, Windows, macOS, BSD, or another operating system, plain text files move effortlessly between them.
The same is true of programming languages. Python, Rust, Java, C, Go, JavaScript, and countless others are all written as plain text. Although the languages differ dramatically, they share the same underlying medium.
Plain text has become the common language through which software communicates.
2.4 Human Readable, Machine Friendly
One reason plain text has survived is that it serves two audiences equally well.
Humans can read it directly.
Machines can process it efficiently.
This dual nature makes plain text exceptionally versatile. A configuration file can be edited with a text editor, searched with command-line tools, compared using version control, transformed into another format, and interpreted by software—all without changing the underlying file.
Few digital formats offer this balance between human understanding and computational efficiency.
2.5 Longevity Through Openness
Open standards tend to outlive proprietary ones.
Plain text is not controlled by a single company, organization, or software vendor. Its fundamental principles are public, well understood, and widely implemented.
As long as computers represent characters, plain text will remain useful.
This openness has made plain text an ideal medium for digital preservation. Libraries, archives, governments, and research institutions frequently store important documents in plain text or formats derived from it because they can be read long after today’s software has disappeared.
2.6 The Foundation of Markup
One of the great misconceptions about plain text is that it cannot describe rich documents.
In reality, plain text often serves as the foundation for sophisticated publishing systems.
Markdown, HTML, LaTeX, AsciiDoc, reStructuredText, and many other markup languages all begin as ordinary text files. Special characters are used to indicate structure rather than appearance.
A heading, for example, may be written with a simple symbol rather than a particular font size. Software later transforms that structure into a beautifully formatted webpage, PDF, book, or presentation.
The result is a clean separation between writing and design.
2.7 Ideal for Automation
Modern computing increasingly depends on automation.
Servers process log files, scripts generate reports, search engines index documents, and artificial intelligence systems analyze enormous collections of text.
Plain text is exceptionally well suited to these tasks because computers can examine it without first decoding complex formatting information.
This explains why so many command-line tools, scripting languages, and data-processing pipelines continue to rely on plain text.
It is the path of least resistance.
2.8 Collaboration and Version Control
When multiple people work on the same document, it is often useful to know exactly what changed.
Plain text makes this remarkably easy.
Version control systems such as Git compare files line by line, recording additions, deletions, and modifications with great precision. Programmers have long benefited from this capability, but writers, researchers, and publishers increasingly do as well.
Because plain text contains only characters, meaningful differences are easy to detect.
Complex binary documents, by contrast, often conceal even the smallest edits within thousands of bytes of formatting information.
2.9 Plain Text in the Age of Artificial Intelligence
The recent rise of artificial intelligence has reinforced rather than diminished the importance of plain text.
Large language models learn from text. Search engines index text. Documentation systems process text. Chatbots generate text.
Even when the final product is a webpage, a report, or a presentation, the underlying workflow frequently begins with plain text.
Far from becoming obsolete, plain text has found new relevance in one of the fastest-moving fields of computing.
2.10 Lessons from Half a Century
Many technologies become obsolete because they attempt to solve the problems of a particular era.
Plain text solves a more fundamental problem: representing human language in a form that both people and computers can understand.
Its purpose has never changed.
That is why it continues to thrive.
The history of computing is filled with forgotten operating systems, abandoned programming languages, discontinued applications, and unreadable file formats.
Plain text has quietly outlived them all.
2.11 Key Ideas
- Plain text survives because it is simple.
- It is independent of particular software vendors.
- It moves easily between operating systems and devices.
- Humans and computers can both understand it.
- It forms the basis of many modern markup languages.
- It works exceptionally well with automation and version control.
- Its openness makes it ideal for long-term preservation.
- New technologies, including artificial intelligence, continue to strengthen rather than weaken its importance.
The next chapter examines another essential foundation of the plain text universe: how computers represent characters through text encodings, and how Unicode made it possible for the world’s writing systems to coexist within a single universal standard.