Who Built That: Awe-Inspiring Stories of American Tinkerpreneurs
Through the stories of inventors who turned workshop ideas into companies, from the Maglite to the crown cap to AC power, Malkin shows what it takes to bring an invention to market and why patent rules matter.

Table of Content
1. Introduction
1 min 02 sec
If the products around you feel as though they simply appeared on a shelf, Michelle Malkin wants to change how you see them. In Who Built That, the syndicated columnist argues that much of American progress came from tinkerpreneurs: people who are part tinkerer, part entrepreneur, and who drag their inventions out of the workshop and into the market, building companies and jobs as they go. Her opening case is a flashlight. A Croatian immigrant named Tony Maglica found the flashlights of his day so poor that he designed a brighter, focusable one and grew it into a company worth billions.
Her throughline is clear. An invention changes the world only when someone pairs it with commercial nerve, partners who can sell it and laws that reward it. Malkin follows that pattern from bridge cables to bottle caps to electric current, then warns that a change in patent rules could end it. Along the way come lessons any builder can use: where to look for openings, who to team up with and how to answer doubters.
2. Treat a poor product as your opening
1 min 46 sec
A contractor who arrived with almost nothing walked into a client’s factory and saw something everyone else had stopped noticing. What he did next challenges a popular claim about where inventors’ success really comes from.
3. Pair every inventor with a sharp seller
1 min 30 sec
A cooling machine was doing fine business in a modest corner of the market. Then a second man looked at it and pictured movie theaters, factories and whole cities growing in places too hot to bear.
4. Stand firm when an old industry pushes back
1 min 45 sec
A rope maker fled a government that blocked change, only to meet a new enemy in his adopted country. His family’s fight lasted two generations and cost more than anyone expected.
5. Prove a small idea with a test people trust
1 min 37 sec
Critics were sure a cheap metal cap could not keep a drink fresh. The inventor skipped the debate and arranged an experiment that took more than a month, and it ended with a party.
6. Strong partnerships beat secrecy and powerful rivals
1 min 46 sec
In one trade, craftsmen were once locked on an island to protect their methods. In another, the most famous inventor in America stood in the way. Both walls fell to the same kind of alliance.
7. Patent rules decide which inventors get a fair chance
1 min 51 sec
A system set up in 1790 let lone inventors profit from their ideas. Malkin argues that one recent rule change, small on paper, could hand the advantage to the biggest players.
8. Conclusion
1 min 13 sec
Every story in the book has the same shape. A clever object appears, and then someone has to fight for it: in the market, against an old industry, against doubters, sometimes against the state. Maglica outworked his peers. Lyle saw cinemas where Carrier saw machinery. Emily Roebling finished a bridge her father-in-law had started, and Painter shipped soda across an ocean to settle an argument. Malkin’s case is that this mix of skill, nerve and partnership built much of modern life, and that rules favoring big filers over small inventors put it at risk.
The pattern is usable at work. When something you rely on works badly, treat it as an opening worth writing down instead of a complaint. Find the partner who sees uses you cannot. When people doubt you, give them a test they can judge for themselves.
Malkin also asks for something simpler. Pick one ordinary object in your home, a coffee table, a phone, a roll of toilet paper, and trace who first made it and who first sold it. Behind it you will find a person who refused to leave the idea in the workshop.
About this book
What is this book about?
Most of the objects we use every day seem to have simply arrived on a shelf. Michelle Malkin argues that each one has a builder behind it: a tinkerpreneur, part inventor and part entrepreneur, who refused to leave an idea in the workshop and turned it into a company, jobs and profit. Malkin tells their stories one by one. A Croatian immigrant builds a better flashlight. A salesman turns a cooling machine into the summer blockbuster. A family finishes the Brooklyn Bridge against fierce opposition, a bottle cap survives a 40-day sea voyage, and an investor and a scientist beat Thomas Edison on electric current. Across these cases she draws a pattern: opportunism, stubbornness in the face of critics and strong partnerships. She closes with a warning. In her view, the American patent system, built in 1790 to reward inventors, has shifted in ways that favor large corporations over lone tinkerers. Readers get a set of memorable stories, practical lessons for anyone trying to bring an idea to market, and a clear statement of the author's case for free markets and inventor-friendly patent rules.
Book Information
Who it's for
Would-be inventors and founders
Aspiring inventors and founders wondering what it takes to turn a prototype into a business.
Sales and marketing professionals
Salespeople and marketers who want to see how selling shaped famous inventions.
Curious about everyday inventions
Readers curious about the stories behind everyday objects and the debate over American patent rules.
About the Author
Michelle Malkin
Michelle Malkin is a journalist and commentator. She began her newspaper career at the Los Angeles Daily News in 1992 and later wrote for The Seattle Times. Since 1999 she has written a nationally syndicated column distributed by Creators Syndicate. She has appeared as a Fox News contributor, and in May 2020 she joined Newsmax TV, where she has hosted the program Sovereign Nation.
Ratings & Reviews
Ratings at a glance
What people think
Listeners view this book as a vital read for all Americans, highlighting its thorough research and the way every fact is supported by references. The narrative shares incredible stories of legendary American innovators, and listeners prize the well-crafted content and its educational benefits, particularly for teenage grandkids. They are moved by the courage and conviction shown by the subjects, and one listener mentions how the text celebrates the specific freedoms that foster innovation.
Top reviews
Finally got around to reading Malkin’s tribute to American ingenuity and I was genuinely surprised by the depth of research. It’s a powerful, fact-backed rebuttal to the idea that collective infrastructure is the sole driver of success. These stories about “tinkerpreneurs” like the guys behind the disposable razor and the Brooklyn Bridge highlight how individual grit and the patent system truly work. Not gonna lie, some of the technical descriptions of how the inventions function got a bit dense, but the human element kept me turning pages. It celebrates the kind of freedom that fosters massive innovation through courage and conviction. Highly recommended for anyone who feels the entrepreneurial spirit is being stifled these days.
Show moreAs a retired history teacher, I think this should be required reading for every high school student in the country. Malkin does an incredible job documenting the lives of people like Maglica and Carrier, people who literally changed the way we live through sheer obsession and hard work. To be fair, her political stance is front and center, but that doesn’t diminish the factual historical value provided in each chapter. My teenage grandkids actually found the section on prosthetic limbs and the evolution of glass manufacturing quite engaging. It’s refreshing to see a book that honors the individual creator instead of just the government systems they used. This is a definite must-read for all Americans.
Show moreWow, what an eye-opener regarding the sheer volume of work that goes into 'simple' things like a disposable razor or a bottle cap. Malkin delivers a punchy, well-referenced defense of the American entrepreneur that is both educational and deeply emotional. I actually teared up reading about some of these individuals who spent their entire lives in trials and trials just to see their vision through. It’s a must-read for anyone who values the courage and conviction it takes to start a business from scratch. The ending goes a bit heavy on the politics, but the stories of those who 'built that' are worth every penny.
Show moreThe chapter on Willis Carrier and the development of air conditioning was easily the highlight for me. I’m fascinated by how humidity control changed entire industries, and Malkin captures that technical evolution with surprising precision. Frankly, the writing can be a bit heavy-handed when she pivots back to the political arguments, but the core history is solid. It’s a well-written exploration of the inventors who built the comforts we take for granted, like toilet paper and root beer. While I don’t agree with every one of her conclusions, you can’t argue with the documented persistence of these individuals. It’s a dense read but worth the effort for the history alone.
Show moreTruth is, I never thought I’d be interested in the history of the U.S. Patent System, but this book changed my mind. Malkin explains how these protections are vital for the little guy to keep their ideas from being swallowed by giants with big pocketbooks. The stories of the 'tinkerpreneurs' are inspiring, even if the tone gets a little bit 'angry' at times toward the previous administration. I especially liked the bit about Abraham Lincoln having a patent; it adds a layer of American history I hadn't considered. It’s a 4-star read because the technical jargon sometimes slows the momentum, but the overall message about protecting innovation is incredibly important.
Show moreEver wonder how mundane items like bottle caps or wire rope actually came to be? This book dives deep into the gritty details of American invention and the people who risked everything to bring their products to market. Personally, I found the 'America first' mindset a bit narrow, yet the actual research into the inventors’ lives is undeniably thorough and backed by extensive references. She really proves her point that individuals are the ones driving progress through years of trial and error. The book is very detailed—sometimes too much so—but it’s a great trip down history lane for anyone who appreciates the mechanics of a free market.
Show moreNot what I expected initially, as I was looking for a more neutral history of American manufacturing. While the stories of innovators like Westinghouse and Tesla are enthralling, Malkin’s political rhetoric often feels like a distraction from the historical narrative. Look, I understand the book's purpose is to dispel a specific 2012 political comment, but the constant return to that theme made it feel repetitive. The technical writing is actually quite good, which is rare for political commentators. I’d give the history sections 5 stars, but the heavy-handed intro and the ranting conclusion bring it down to a 3 for me.
Show moreI picked this up because I’m a fan of biographies, and the premise of celebrating unknown inventors appealed to me. Some sections, like the ones on the electrical grid and the Brooklyn Bridge, are genuinely fascinating and well-researched. However, the book felt quite dry in the middle, almost like reading a technical manual rather than a narrative. In my experience, the author’s passion for the subject comes through, but it’s often buried under layers of political grievances that didn't always feel relevant to the inventions. It's a decent book, but you have to be prepared for a very specific ideological lens that colors the historical facts.
Show moreThis book offers a fascinating look at the 'tinkerpreneur' spirit, but it requires some patience to get through. Malkin is an exceptionally detailed writer, which is great for understanding how a power plant at Niagara Falls works, but less great for keeping a casual reader’s attention. I appreciated learning about the U.S. Patent System’s evolution, but I wish the tone hadn't been so polarized throughout. It’s a solid resource for facts and references, and the individual stories are inspiring. But the political talk at the end felt like it belonged in a different book entirely. It's an okay read if you can filter out the rhetoric.
Show moreLook, I tried to keep an open mind, but this felt more like a political manifesto than a historical account. I found a copy at a thrift store and hoped for an objective look at how modern infrastructure was actually developed. Instead, the book focuses on inventions from 100 years ago to avoid acknowledging how much modern businesses rely on the very roads and bridges she dismisses. The writing is incredibly detailed, which makes it a slow and often boring slog. Honestly, the author’s confirmation bias is on full display here, and the constant political jabs get in the way of the actual stories of the tinkerers.
Show moreQuestions about this book
What is the main idea of Who Built That by Michelle Malkin?
Malkin argues that American progress was driven by tinkerpreneurs, inventors who were also entrepreneurs and brought their ideas to market, creating companies and jobs. Through stories like the Maglite, air conditioning, the Brooklyn Bridge, the crown cap and AC power, she shows the role of opportunism, persistence and partnership. She ends by warning that patent reform favoring large corporations threatens small inventors.
What is a tinkerpreneur?
In Malkin’s usage, a tinkerpreneur is part tinkerer and part entrepreneur: someone who invents something and then takes it out of the laboratory into the commercial world. Tony Maglica is her model. He spotted how poor existing flashlights were, built the bright, focusable Maglite and kept improving it until Maglite became a company worth billions.
Why does Malkin criticize changes to the US patent system?
She explains that the system founded in 1790 let inventors sell, license or assign patents in exchange for public disclosure and a limited term. It later shifted from rewarding whoever invented first to whoever signed the patent papers first. Malkin argues this favors large corporations, which can file many patents, while small inventors need money and time and lose everything if they are not first.
What lessons does Who Built That offer entrepreneurs?
The stories suggest several. Treat a badly made product as a business opening, as Maglica did with flashlights. Pair technical skill with someone who sees the market, like Carrier and the salesman Irvine Lyle. Answer critics with a test they can judge, as William Painter did by shipping capped soda on a 40-day voyage. And understand patent filing rules early.
How can I apply Who Built That in everyday life?
Malkin suggests picking an ordinary product you use, such as toilet paper, a smartphone or a glass coffee table, and researching its history. Tracing who invented it and who sold it reveals the clever ideas and marketing that brought it from the lab to your home, and builds appreciation for the people who keep tinkering.
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