Thing Explainer: Complicated Stuff in Simple Words
Randall Munroe · 2015 · 8 ideas · 8 min
Even the most complicated machines and systems can be explained clearly using only the thousand most common English words, and forcing explanations through that constraint reveals both the essential mechanics and the absurdity of jargon.
Why this book
Munroe argues that jargon and technical vocabulary often obscure rather than clarify how things actually work, and that restricting an explanation to only the one thousand most commonly used English words forces a writer to describe the genuine underlying mechanics rather than hide behind specialized terminology. Using detailed labeled diagrams of everything from rockets ("up goer five") to nuclear reactors ("machines that make water hot with tiny pieces of metal") to the human body, he demonstrates that plain language can capture real technical accuracy, not just a dumbed-down approximation.
It matters because the exercise exposes how much of what sounds impressively complicated is actually simple once stripped of its specialized names, while also making genuinely difficult engineering and science approachable and often very funny, showing that clarity and precision aren't opposites.
Who should read it
Curious readers of any technical background who enjoy visual explanations, engineering diagrams, or Munroe's dry humor from xkcd will find this delightful. It also works well for anyone wanting an entry point into how everyday machines and natural systems function, without needing prior vocabulary.
About the author
Randall Munroe is an American cartoonist and former NASA roboticist best known for the webcomic xkcd, and he first popularized this simple-language explanation style with an earlier comic depicting a rocket diagram using only common words.