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.

clear all ✕

why aren't all 4 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
Non-legal founders built Vessence MVP by embedding inside a law firm
“I worked with a company in the previous batch, the Spring batch, which was just now wrapping up, called Vessence, that are building software for lawyers. And neither of the founders has a legal background, and so the way that they got started before YC was the…”
Pete Koomen Oct 21, 2025 ▶ 5:25 Startup Advice: AI GTM, Pivoting & How To Hire · Y Combinator
Assertion Supported
The founders of Brex entered Y Combinator working on a VR startup
“There were the Brex founders, who I think were working on, like, a VR startup at the time.”
Pete Koomen Oct 11, 2024 ▶ 9:52 How Do Billion Dollar Startups Start? · Y Combinator
Assertion Supported
Koomen: Stripe Charged More Than Competitors in Its Early Days
“The Collison brothers famously charged more for Stripe in the beginning than their competition did. The fact that they were able to sell their product anyway was compelling evidence that they were onto something.”
Pete Koomen Jul 8, 2024 ▶ 17:07 Enterprise Sales | Startup School · Y Combinator
Assertion Contradicted
Koomen: Optimizely started as manual A/B testing consulting before building software
“We actually had this example at Optimizely where we were building software to help companies run A-B tests. But at the earliest stages, we got companies to pay us just to go in and manually build A-B tests. For them. Right. And so we're making money. The first…”
Pete Koomen May 30, 2024 ▶ 23:38 Startup Experts Discuss Doing Things That Don't Scale · Y Combinator
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