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 3 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
SpaceX's Merlin is the most reliable, highest thrust-to-weight engine ever
“My, probably my proudest development was the Merlin engine, which is currently flying on Falcon nine, the most reliable rocket engine ever developed, and also the highest thrust of weight of any rocket engine ever developed.”
Tom Mueller Jun 4, 2026 ▶ 8:24 Tom Mueller: SpaceX's #1 Employee Built the Merlin Engine. Now He's Building Impulse Space · Sourcery with Molly O'Shea
Assertion Supported
Mueller met Elon Musk through amateur rocketry projects in his garage
“In fact, that's how I met Elon was through the amateur rocket stuff that I was doing.”
Tom Mueller Jun 4, 2026 ▶ 3:07 Tom Mueller: SpaceX's #1 Employee Built the Merlin Engine. Now He's Building Impulse Space · Sourcery with Molly O'Shea
Assertion Supported
Impulse Space's Helios vehicle can boost Mars payload capacity 5x
“This can take a large satellite, like a four ton satellite from low earth orbit at a couple hundred miles up to geosynchronous orbit at 22,000 miles. That's so basically escaping most of the gravity well over very high energy transfer. It can take, you know, f…”
Tom Mueller Jun 4, 2026 ▶ 7:24 Tom Mueller: SpaceX's #1 Employee Built the Merlin Engine. Now He's Building Impulse Space · Sourcery with Molly O'Shea
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