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[return to "Cursor's latest “browser experiment” implied success without evidence"]
1. nindal+BA[view] [source] 2026-01-16 17:25:56
>>embedd+(OP)
The CEO said

> It's 3M+ lines of code across thousands of files. The rendering engine is from-scratch in Rust with HTML parsing, CSS cascade, layout, text shaping, paint, and a custom JS VM.

"From scratch" sounds very impressive. "custom JS VM" is as well. So let's take a look at the dependencies [1], where we find

- html5ever

- cssparser

- rquickjs

That's just servo [2], a Rust based browser initially built by Mozilla (and now maintained by Igalia [3]) but with extra steps. So this supposed "from scratch" browser is just calling out to code written by humans. And after all that it doesn't even compile! It's just plain slop.

[1] - https://github.com/wilsonzlin/fastrender/blob/main/Cargo.tom...

[2] - https://github.com/servo/servo

[3] - https://blogs.igalia.com/mrego/servo-2025-stats/

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2. zipy12+vB[view] [source] 2026-01-16 17:29:47
>>nindal+BA
Honestly as soon as I saw browser in rust I assumed it had just reproduced the servo source code in part, or utilised its libraries.
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3. nindal+mE[view] [source] 2026-01-16 17:42:35
>>zipy12+vB
I thought they'd plagiarise, not import. Importing servo's code would make it obvious because it's so easy to look at their dependencies file. And yet ... they did. I really think they thought no one would check?
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4. satvik+q71[view] [source] 2026-01-16 19:37:17
>>nindal+mE
> And yet ... they did. I really think they thought no one would check?

I doubt even they checked, given they say they just let the agents run autonomously.

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5. boness+iy1[view] [source] 2026-01-16 21:54:39
>>satvik+q71
Hypothetically: what if they did check, only in order to ‘check’ they asked the LLM instead of manually verifying and were told a story? Or, perhaps, they did check manually but sometime after the files were subtly changed despite no incentive or reason to do so outside of a passing test? …

Humans who are bad and also bad at coding have predictable, comprehensible, failure modes. They don’t spontaneously sabotage their career and your project because Lord Markov twitched one of its many tails. They also lie for comprehensible reasons with attempts at logical manipulations of fact. They don’t spontaneously lie claiming not to having a nose, apologize for lying and promise to never do it again, then swear they have no nose in the next breath while maintaining eye contact.

Semi-autonomous to autonomous is a doozy of a step.

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