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
Katz: Anthropic chose ClickHouse after asking Claude for a recommendation
“If you ask Anthropic how they chose to use ClickHouse, they'll tell you they asked Claude, what technology should we use for this specific observability use case? And Claude suggested ClickHouse.”
Aaron Katz Aug 31, 2026 ▶ 16:34 ClickHouse CEO: AI Margins Need to Improve | Revenue Concentration Should be a Concern
Assertion Partly supported
Katz: Tesla ingests one billion events per second into ClickHouse
“Tesla, for example, is ingesting a billion events per second into ClickHouse.”
Aaron Katz Aug 31, 2026 ▶ 14:30 ClickHouse CEO: AI Margins Need to Improve | Revenue Concentration Should be a Concern
Assertion Supported
Katz: Anthropic, OpenAI, and Weights & Biases all use ClickHouse
“It's the world's most popular open source database, and it satisfies a very broad Array of use cases, and it's used by nearly every AI native company, Anthropic, OpenAI, Weights and Biases.”
Aaron Katz Aug 31, 2026 ▶ 1:30 ClickHouse CEO: AI Margins Need to Improve | Revenue Concentration Should be a Concern
Assertion Supported
Lemkin: ClickHouse originated as an in-house tool at Yandex
“ClickHouse is basically an in-house open source product built at Yandex, which is now Nibius, built in Russia.”
Jason Lemkin Jan 22, 2026 ▶ 1:02:10 Elon Musk vs Sam Altman | The Implosion of Thinking Machines | Can VC Survive Public Pricing? · 20VC with Harry Stebbings
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