Quick Take
- Narration: Will Collyer brings Orlin’s wry authorial voice to life with a light touch that keeps the humor landing without undermining the intellectual seriousness underneath.
- Themes: calculus as language for describing change, the humanities and mathematics as complementary modes, mathematical intuition versus formal proof
- Mood: Playful and curious, with a genuine sense of discovery
- Verdict: The best introduction to what calculus is actually about for people who survived the class but never understood the point of it.
I picked up Change Is the Only Constant on the recommendation of an engineer friend who described it as the book that finally explained to her why calculus exists. She had been teaching herself differential equations for a project and found she knew the mechanics but not the philosophy. Ben Orlin, the popular math blogger behind Math With Bad Drawings, had written the book she needed, and after listening to it over a series of commutes, I understand the recommendation completely.
Orlin’s premise is that calculus is not primarily a set of procedures for computing derivatives and integrals. It is a language for talking about change, and as such it connects to everything humans think about: time, risk, love, decay, growth, and the particular ways in which things that seem stable are always moving. Change Is the Only Constant makes this argument across twenty-eight short essays, divided into two parts: Moments, which addresses the calculus of instantaneous change, and Eternities, which addresses accumulation and integration. Each essay uses a non-mathematical source, Sherlock Holmes, Mark Twain, David Foster Wallace, and others, as a way into the mathematical concept.
What This Book Actually Does
The book is explicit about what it is not: it will not teach you calculus in the procedural sense. You will not come away knowing how to compute a limit or evaluate an integral. What you will come away with is something arguably more valuable: an intuitive sense of what those operations mean and why anyone would want to do them. Several reviewers who had taken calculus courses and passed them noted that the book gave them the explanatory layer their textbooks never provided. One engineer described the traditional calculus pedagogy as relentlessly focused on procedural skill while completely ignoring conceptual meaning, and said Orlin takes you the final step that other calculus books never bothered with.
This is the right description of what makes the book unusual. Mathematical education tends to separate formal rigor from intuitive understanding, and most students emerge with one or neither but rarely both. Orlin is working explicitly in the intuitive register, and he is honest about it. He is not trying to give you the rigor. He is trying to give you the picture that makes the rigor worth having, which is a different and genuinely valuable project. The book will not replace a calculus textbook, but for a large number of readers, it will make the textbook comprehensible for the first time.
Orlin’s Humor and Why It Works in Audio
The Math With Bad Drawings blog built its readership on the combination of wit and genuine mathematical depth, and the book carries that combination into audio territory with help from Will Collyer’s narration. The humor in Orlin’s writing is specific and self-aware: he knows that a lot of people are listening or reading because they have a complicated relationship with mathematics, and he uses that awareness without condescension. The jokes are on the math, not on the struggling student.
Collyer reads with a lightness that keeps the essays moving without losing the moments of genuine profundity. The essays that touch on David Foster Wallace and on a beloved dog named Elvis have a different emotional register than the more overtly comic pieces, and Collyer adjusts accordingly. The transitions between humor and seriousness are handled naturally, which is harder to do in narration than on the page where the reader sets their own pace. One reviewer noted that the book provides the whys of calculus that are so often absent from traditional math pedagogy, and that Orlin showcases his masterful teaching skills by educating readers without their knowledge. Collyer makes that experience feel effortless.
What Gets Lost Without the Drawings
Orlin’s blog and book format are both built partly on the visual humor of his admittedly terrible drawings. In audio form, those drawings are absent, and some of the jokes that rely on them land slightly flat. This is a genuine limitation of the audio format for this particular book. Collyer fills in where he can with vocal emphasis, and Orlin’s prose is often descriptive enough to construct the visual in the listener’s imagination, but listeners who want the full experience may find having the physical book nearby useful for specific essays. The audio version stands on its own for most of the twenty-eight pieces, but the book as a complete artifact is richer.
The Ideal Listener for This Book
Someone who took calculus and passed it without understanding it. Someone who was told they were bad at math and wants to find out if that was really about math or about how math was taught. Someone who enjoys Radiolab or The Joy of X and wants to spend five and a half hours in a similar register. This is not the right listen for someone who wants procedural instruction or who already has strong intuitive understanding of calculus. But for the large audience in between those two poles, it is one of the more intellectually pleasurable audiobooks in the popular mathematics space, and Collyer’s narration ensures the pleasure is consistent across all twenty-eight essays.
For listeners who find the book leaves them wanting more, Orlin’s Math With Bad Drawings book covers similar territory with different examples. The two books are complementary rather than redundant. But Change Is the Only Constant is the one to start with, because it makes the argument for why the territory is worth exploring in the first place. After twenty-eight essays, the case is convincing, and the experience of being convinced by a calculus book is itself a small surprise worth having.
Frequently Asked Questions
Do I need any mathematical background to follow Change Is the Only Constant?
No formal background is required. Orlin is explicit that the book will not teach calculus procedurally, and the essays are constructed to build intuitive understanding from non-mathematical starting points. The book is aimed specifically at people who have either never studied calculus or studied it without understanding it.
Orlin’s Math With Bad Drawings blog relies heavily on visuals. Does the audiobook work without those drawings?
It works well for most of the essays but loses something in the pieces where the drawings are doing comedic or explanatory work. Will Collyer’s narration compensates where possible through tone and emphasis, but some listeners may want to have the physical book nearby for specific essays.
The book is divided into Moments and Eternities. Is there a reason to listen in that order?
Yes. Moments addresses derivatives and instantaneous change, while Eternities addresses integration and accumulation. The sequence reflects the historical and conceptual development of calculus, and the second half builds on intuitions established in the first. The arc is more satisfying if you listen sequentially.
Will Collyer’s narration: does he handle the mathematical content differently from the literary references?
Collyer adjusts register between the more technical essays and the more literary or emotional ones. He handles the David Foster Wallace and Elvis references with the right tonal shift, and his comic timing is reliable in the funnier essays. The narration serves the material well overall.
