Comment by 9rx

> I spent a good part of my career (nearly a decade) at Google working on getting Clang to build the linux kernel.

How much of that time was spent writing the tests that they found to use in this experiment? You (or someone like you) were a major contributor to this. All Opus had to do here was keep brute forcing a solution until the tests passed.

It is amazing that it is possible at all, but remains an impossibly without a heavy human hand. One could easily still spend a good part of their career reproducing this if they first had to rewrite all of the tests from scratch.