alt Hacker NewsGiven the commit is 4 weeks old, will it eventually get comments?
The code before the patch does not look obviously wrong. Now, some more lines were added, but would you now say it now looks less obviously wrong, or more obviously correct?
It seems that the invariants needed here are either in some person's heads, or in some document that is not referenced.
Reading the code for the first time, the immediate question is: "What other lines might be missing? How can I figure?"
If the "obviously correct" level of the code does not increase for a human reviewer, how is it ensured that a similar problem will not arise in the future? Or do we need more LLM to tell us which other lines need to be added?
Yeah, the test with the patch also adds comments. The human reviewer had extra context available.
I did get Opus to do an audit for similar problems elsewhere, to supplement the investigations that we were already doing by hand. It initially thought it found something, but when asked to produce a testcase, it thought for 20 minutes and admitted defeat. I suspect that the difference between Opus and Mythos is in small edges like this: if Mythos is smart enough to spot why Opus's discovery didn't work a little bit faster, and it can waste less time chasing down red herrings, then it's more likely to find a real bug within the limits of a context window. It's not that Opus completely lacks some capability, it's that it has trouble chaining all the pieces together consistently.