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 5 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
Sobo: Zed trains edit prediction models on opt-in user open-source data
“Like the rest of Zed fully open source, the data that it's trained on is actually open. We're collecting data from any, if you're editing an open source project in Zed, you can opt in to collect the data.”
Nathan Sobo May 7, 2025 ▶ 8:51 Zed Agents — with Zed Cofounders Nathan Sobo & Antonio Scandurra
Assertion Partly supported
Sobo: The Zed editor reliably delivers 120 frames per second
“Zed runs at a 120 frames a second, reliably delivering frames.”
Nathan Sobo May 7, 2025 ▶ 1:39 Zed Agents — with Zed Cofounders Nathan Sobo & Antonio Scandurra
Assertion Supported
Sobo: Zed engineered an editor from scratch to 500,000 lines of Rust
“And we've essentially engineered an entire editor from an empty repo to up to about over a half a million lines of rust.”
Nathan Sobo May 7, 2025 ▶ 2:23 Zed Agents — with Zed Cofounders Nathan Sobo & Antonio Scandurra
Assertion Supported
Sobo: Zed's testing infrastructure is fully deterministic and simulates network scheduling
“Like one of the cool things about the way we've done testing and thus far in Zed is everything is fully deterministic. We even simulate like network interaction and we literally simulate the scheduler such that we can interleave deterministically network messa…”
Nathan Sobo May 7, 2025 ▶ 14:14 Zed Agents — with Zed Cofounders Nathan Sobo & Antonio Scandurra
Assertion Supported
Scandurra: Zed fine-tuned Qwen 2.5 Coder using SFT and DPO for Zeta
“So yeah, we started with Quinn, 2.5 coder B and went through the whole process. Collecting examples, fine tune, doing supervised fine tuning, doing direct preference optimization.”
Antonio Scandurra May 7, 2025 ▶ 8:29 Zed Agents — with Zed Cofounders Nathan Sobo & Antonio Scandurra
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