The Ledger

Every statement that passed quotation and attribution checks. Mix any filter with any other: certainty 1/5, debate potential 5/5, or both at once.

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why aren't all 1,034 resolved? a statement only gets an assessment when the public record can support or contradict it. opinions and what-ifs never can, and 0 checkable ones are still open, waiting for their date. predictions held up or didn't; assertions are supported or contradicted. on every card: ▮▮▮▮▮ certainty · ▮▮▮▮▮ debate potential. speakers are clickable

Assertion Supported
Rockefeller cut refined oil prices below cost to break competitors
“He would cut the price of refined to below costs, knowing that every sale is now competitor had to drop the price to meet only hasten their demise. He would keep the prices low until he broke the competitors that didn't want to consolidate or sell.”
David Senra Nov 17, 2025 ▶ 47:05 How Rockefeller Worked
Assertion Partly supported
The CIA Was Oracle's Very First Commercial Database Customer
“And so the very first customer turned out to be the CIA.”
David Senra Nov 4, 2025 ▶ 21:42 How Larry Ellison Thinks
Assertion Supported
Ellison Abandoned Client-Server to Focus Entirely on Internet Computing
“Ellison's decision to the horror of many colleagues and customers to abandon all further development of client server based applications and concentrate Oracle's entire engineering effort on building for the new computing architecture of the internet.”
David Senra Nov 4, 2025 ▶ 3:23 How Larry Ellison Thinks
Assertion Supported
Early Oracle Sales Relied on Destructive End-of-Quarter Discounting
“One of the oldest and worst habits of the Oracle sales organization was the use of aggressive discounting to get existing customers to buy software before they actually needed it.”
David Senra Nov 4, 2025 ▶ 10:35 How Larry Ellison Thinks
Assertion Supported
Renaming Network Computing to Internet Computing Caused Oracle Sales to Surge
“Network computing architecture got absolutely no traction in the marketplace. So we announced a successor called internet computing architecture and sales took off. The big difference between the two, the name.”
David Senra Nov 4, 2025 ▶ 12:09 How Larry Ellison Thinks
Assertion Supported
Early Oracle Won Deals Across Major US Intelligence Agencies
“We had won several deals, the CIA, Navy intelligence, air force intelligence, and the NSA.”
David Senra Nov 4, 2025 ▶ 21:55 How Larry Ellison Thinks
Assertion Contradicted
Senra: Jensen Huang is tech's longest-running founder CEO
“Jensen is the longest running founder CEO of a tech company in the world.”
David Senra Oct 19, 2025 ▶ 15:19 How Jensen Works
Assertion Supported
Jensen Huang assigns a directly reporting 'pilot in command' to every project
“Under the mission is the boss philosophy, Jensen would start every new project by designating a leader, which he calls a pilot in command. That pilot in command will report directly to Jensen. We always have a pilot in command for every project. Whenever Jense…”
David Senra Oct 19, 2025 ▶ 33:47 How Jensen Works
Assertion Supported
Jensen Huang organizes Nvidia by function rather than separate business units
“Jensen organized his employees into groups centralized by function. So like sales, engineering, operations, and so on. They were treated as a general pool of talent and not divided by business units or divisions. We take the people that we have, and we're able…”
David Senra Oct 19, 2025 ▶ 34:42 How Jensen Works
Assertion Supported
Nvidia's stock fell 80% during its massive initial investment in CUDA
“The company invested so much in converting its GPUs for CUDA compatibility that its gross margin fell from 45 to 35%. At the same time it's increasing its spending on CUDA, the global financial crisis destroyed consumer demand And Nvidia's stock fell by more t…”
David Senra Oct 19, 2025 ▶ 49:35 How Jensen Works
Assertion Partly supported
Interactive Brokers generated $3.7B profit on $5.2B revenue in 2024
“A pure play brokerage with four million customers, over seven hundred billion in client assets, and just 3000 employees, most of them engineers. In 2024, it generated 3.7 billion in profits on 5.2 billion in revenue. The company he took public at a twelve bill…”
David Senra Oct 5, 2025 ▶ 29:52 The Billionaire Who Automates Everything: Thomas Peterffy
Assertion Supported
Peterffy built a partial differential equation to price options using computers
“Peterfi had used his computer to invent a partial differential equation that priced options based on variables, such as the underlying assets price, volatility, and the options time to expiration.”
David Senra Oct 5, 2025 ▶ 12:43 The Billionaire Who Automates Everything: Thomas Peterffy
Assertion Supported
Peterffy hacked a Quotron wire with an oscilloscope for real-time market data
“He essentially hacked the system, cutting the wire and attaching the oscilloscope.”
David Senra Oct 5, 2025 ▶ 16:11 The Billionaire Who Automates Everything: Thomas Peterffy
Assertion Supported
Thomas Peterffy invented the first handheld trading computer in 1983
“In 1983, 27 years before Steve Jobs unveiled the iPad. Peterfi invented the first handheld trading computer.”
David Senra Oct 5, 2025 ▶ 19:58 The Billionaire Who Automates Everything: Thomas Peterffy
Assertion Supported
The CBOE banned analytical devices on trading floors in response to Peterffy
“They actually passed a rule that analytical devices may not be used on the trading floors, Peterfi said.”
David Senra Oct 5, 2025 ▶ 21:03 The Billionaire Who Automates Everything: Thomas Peterffy
Assertion Supported
Atari founder Nolan Bushnell declined 30% of Apple for $50k
“Nolan Bushnow, the founder of Atari, recounts in his book and a bunch of other interviews I've seen with him. Biggest regret in his life, he was offered 30% of Apple, I think for like 50,000 or a 100,000, it was something like that. And he said, no”
David Senra Aug 14, 2025 ▶ 26:09 Steve Jobs In His Own Words (Make Something Wonderful)
Assertion Partly supported
The FIA traded its 30% stake in F1 TV rights for $9M
“The FIA Got spooked about the future of television, which suited Bernie perfectly. They traded away its 30% stake of the TV rights for nine million dollars.”
David Senra Jul 22, 2025 ▶ 39:29 The Outsiders Who Changed F1 Forever
Assertion Supported
Rival F1 teams rejected Bernie Ecclestone's $100k offer for 10% TV rights
“Bernie said that he paid a million dollars to get the TV rights for F one. There's 10 teams. I will sell each of you 10% for a 100,000 dollars. And one of the team owners is actually interviewed in the documentary. And he says us nine idiots all said no.”
David Senra Jul 22, 2025 ▶ 30:41 The Outsiders Who Changed F1 Forever
Assertion Supported
Bernie Ecclestone was Britain's highest-paid executive in 1993, earning $44M
“He was the highest paid executive in Britain. In 1993, his combined salary from the two companies he used for selling television and sponsorship rights amounted to forty-four million dollars.”
David Senra Jul 22, 2025 ▶ 42:46 The Outsiders Who Changed F1 Forever
Assertion Supported
Dietrich Mateschitz bought Ford's Jaguar F1 team for one pound
“So he buys The Ford Jaguar F-one team, which I guess was in bad straights because he gets it for one pound sterling, renames it Red Bull Racing.”
David Senra Jul 22, 2025 ▶ 50:15 The Outsiders Who Changed F1 Forever
Assertion Partly supported
Luxottica Launched a Hostile Takeover of a Conglomerate Five Times Its Size
“He launches a surprise hostile to offer to buy the U S shoe corporation, which owns lens crafters, which is the largest optical store chain in the world. U S shoe. This is the nutty part was a conglomerate. That had a stock market value five times higher. Thei…”
David Senra Jul 14, 2025 ▶ 51:33 This Orphan Built a $116 Billion Empire Without You Noticing
Assertion Supported
Oakley Stock Fell 37% After Luxottica's Sunglass Hut Dropped Its Products
“Sunglass Hut stopped selling Oakley's. Sunglass Hut accounted for a quarter of Oakley's business and its share price fell by 37%.”
David Senra Jul 14, 2025 ▶ 15:55 This Orphan Built a $116 Billion Empire Without You Noticing
Assertion Supported
Essilor Controls Nearly Half of the Global Prescription Lens Market
“Essilor controls almost half of the world's prescription lens business and has acquired more than 250 other companies in the past 20 years.”
David Senra Jul 14, 2025 ▶ 17:03 This Orphan Built a $116 Billion Empire Without You Noticing
Assertion Supported
Mark Zuckerberg Spent $3.5 Billion for a 3% Stake in EssilorLuxottica
“Mark Zuckerberg, just spent three and a half billion dollars buying a three percent stake in Essilor Luxottica.”
David Senra Jul 14, 2025 ▶ 18:54 This Orphan Built a $116 Billion Empire Without You Noticing
Assertion Supported
Leonardo Del Vecchio Turned a €6,000 Stake Into €25 Billion
“In 1961, Delvecchio invest 500,000 lira for 33% of the company. So that's about 6000 euros today. So he puts in 6000 euros for 33% of this company. 60 years later. His shares will be worth twenty five billion euros from 6000 euros to twenty five billion in 60 …”
David Senra Jul 14, 2025 ▶ 32:29 This Orphan Built a $116 Billion Empire Without You Noticing
Assertion Supported
Del Vecchio Bought a US Distributor for $11M on $14M Revenue
“He buys 50% of his largest American distributor for eleven million dollars at a time when his entire company is just doing a fourteen million in revenue.”
David Senra Jul 14, 2025 ▶ 47:45 This Orphan Built a $116 Billion Empire Without You Noticing
Assertion Contradicted
Michelin Invented the World's First Removable Pneumatic Tires in 1891
“No one else in the world had this invention at the time.”
David Senra Jul 9, 2025 ▶ 13:26 The Greatest Marketer of All Time and The Cofounder of the Michelin Family Dynasty Andre Michel
Assertion Supported
Michelin Built Thousands of Free Road Signs to Increase Tire Wear
“They built road signs across France. The job of the government was done by a private company. They built all these road signs, thousands of them for free. Why? Because better signs meant longer trips, more driving, more wear on those, on the tires and therefor…”
David Senra Jul 9, 2025 ▶ 28:38 The Greatest Marketer of All Time and The Cofounder of the Michelin Family Dynasty Andre Michel
Assertion Partly supported
Ferrero Group generates $20B in annual revenue with zero outside debt
“So Ferrero owned a hundred percent of his company. He had no outside shareholders. He had no debt today. That company does twenty billion dollars a year in revenue with very high margins.”
David Senra Jun 24, 2025 ▶ 3:06 Michele Ferrero's $40 Billion Privately Owned Chocolate Empire
Assertion Supported
Ferrero purchased one-third of the global hazelnut crop by the mid-2010s
“By the mid 2010 Ferrero is purchasing roughly one third of the entire world's hazelnut crop and had even become the world's largest hazelnut supplier itself.”
David Senra Jun 24, 2025 ▶ 23:07 Michele Ferrero's $40 Billion Privately Owned Chocolate Empire
Assertion Supported
Michele Ferrero recreated 600-meter altitude hill air conditions inside his office
“He felt that the air that he was breathing was so conducive to thinking that he hired architects to recreate the characteristics of those walking paths. In his office, they exactly replicated the characteristics of the air in the hills at about 600 meters in a…”
David Senra Jun 24, 2025 ▶ 34:42 Michele Ferrero's $40 Billion Privately Owned Chocolate Empire
Assertion Supported
Ferrero operated Italy's largest private delivery fleet, second only to the army
“And at the very beginning, you know, in the 19 forties, he has 41 vans. You fast forward, 20 years later, he's got thousands of them. And by this time Ferrero had the largest private fleet in Italy, second only to the Italian army, all completely controlled by…”
David Senra Jun 24, 2025 ▶ 39:15 Michele Ferrero's $40 Billion Privately Owned Chocolate Empire
Assertion Partly supported
Jimmy Choo launched with $150,000 in seed capital and sold for $1.2B
“Now, remember, this is a company that's going to sell for 1.2 billion dollars in about 15 years from where we're on the story. They start the company with just a hundred. Her dad puts up a 150,000 dollars. That's all they start with the company.”
David Senra Jun 8, 2025 ▶ 20:03 How Tamara Mellon Built Jimmy Choo
Assertion Partly supported
Jimmy Choo scaled to a $1.2 billion acquisition through sequential PE sales
“In 2001, Jimmy Choo sells 50% share to Phoenix Equity Partners and leaves the business. Three years later, Lion Capital buys Jimmy Choo for one hundred and one million dollars. Three years after that, Lion Capital sells Jimmy Choo for one hundred and eighty fi…”
David Senra Jun 8, 2025 ▶ 46:17 How Tamara Mellon Built Jimmy Choo
Assertion Supported
Akio Morita rejected a 100,000-unit Bulova order to protect Sony's brand
“In this case, Akio just turned down an order for a 100,000 units, which was worth several times the total cap capital of his company.”
David Senra May 6, 2025 ▶ 51:04 The Life Story of Akio Morita: Founder of Sony
Assertion Supported
Norio Ohga started as a paid product critic before becoming Sony president
“Nurio, who starts out as a paid critic is now the president of Sony.”
David Senra May 6, 2025 ▶ 56:51 The Life Story of Akio Morita: Founder of Sony
Assertion Supported
Dell's annual revenue grew from $6 million to $25 billion.
“Dell's revenue during our first 16 years. Okay, so it's going to start in 1984 at six million. It's going to end in 1999 at 25 Billion.”
David Senra Apr 22, 2025 ▶ 51:26 The Life Story of Michael Dell
Assertion Supported
Compaq operated at 36% cost of revenue compared to Dell's 18%.
“Compact had no price advantage. Their operating costs were 36% of revenue as contrasted with our lean and mean, 18%.”
David Senra Apr 22, 2025 ▶ 1:22:23 The Life Story of Michael Dell
Assertion Supported
Dell's equity value increased over 625% in the eight years post-buyout.
“The value of our equity in the eight years since the announcement of the go private increased by over 625% and our enterprise value increased to over a hundred billion dollars.”
David Senra Apr 22, 2025 ▶ 1:41:58 The Life Story of Michael Dell
Assertion Supported
Citadel lost 50% of its equity in just 16 weeks during 2008
“In 2008, that tuition bill bill almost became getting expelled from school because we lost half our equity in 16 weeks in a firm. That had never had a double digit drawdown in 20 years.”
David Senra Apr 22, 2025 ▶ 33:23 Ken Griffin: Founder of Citadel and Citadel Securities
Assertion Supported
Citadel receives approximately 100,000 job applications in a single year
“Citadel founded 35 years ago. Citadel Securities founded 23 years ago. And yet, you know, third, 23 and 35 years into his business, we have a 100,000 applicants for positions this year.”
David Senra Apr 22, 2025 ▶ 53:57 Ken Griffin: Founder of Citadel and Citadel Securities
Assertion Partly supported
Raising Cane's Grew Revenue From $1.5B in 2020 to $4.5B Four Years Later
“So in 2020, the raising canes was doing 1.5 billion in revenue. Four years later, that four and a half billion.”
David Senra Apr 4, 2025 ▶ 36:36 Todd Graves and His $10 Billion Chicken Finger Dream
Assertion Supported
Todd Graves Built Raising Cane's Without Ever Raising Institutional Equity
“He never raised outside equity after this, And some of the boilermakers, like Wild Bill, one of the few, like, angel investors that would put in money to raising canes, and then he also said that he raised money from his bookie.”
David Senra Apr 4, 2025 ▶ 22:30 Todd Graves and His $10 Billion Chicken Finger Dream
Assertion Supported
Raising Cane's AUV ranks second in QSRs behind Chick-fil-A at $6.5M
“The average raising canes does about 6.5 million a year in sales. That puts him in an average store basis in his industry. He's in second behind Chick-fil-A for QSRs.”
David Senra Apr 4, 2025 ▶ 48:57 Todd Graves and His $10 Billion Chicken Finger Dream
Assertion Supported
Raising Cane's Times Square location generated $22M in year one
“They opened up one in times square and that one did twenty two million its first year.”
David Senra Apr 4, 2025 ▶ 49:10 Todd Graves and His $10 Billion Chicken Finger Dream
Assertion Contradicted
CAA captured a 75% market share within its first 10 years
“I think it was within, like, the first 10 years of founding of CAA, and they had, like, a 75% market share of their entire industry”
David Senra Mar 21, 2025 ▶ 20:04 The Rise and Fall (and Rise) of the Most Powerful Man in Hollywood: Michael Ovitz
Assertion Contradicted
CAA was the first talent agency to package feature films
“We've grown so big enough that we were able to package movies with multiple clients, which was a common practice in television, but not in film. Nobody was doing this in film. CAA was the first to orchestrate the entire development process.”
David Senra Mar 21, 2025 ▶ 58:51 The Rise and Fall (and Rise) of the Most Powerful Man in Hollywood: Michael Ovitz
Assertion Contradicted
Michael Ovitz Captured 75% Talent Agency Market Share Within CAA’s First Decade
“Within the first 10 years of CAA, 10 years after founding the company, they had like something like 75% market share. Of, you know, his industry.”
David Senra Mar 14, 2025 ▶ 20:15 Dinner With Michael Ovitz
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