Compilers are deterministic (for the most part, and it's incredibly rare to introduce a compiler bug that self-replicates in future compilers (unless you're Ken

Compilers are deterministic (for the most part, and it's incredibly rare to introduce a compiler bug that self-replicates in future compilers (unless you're Ken Thompson and are reflecting upon trust itself)). Alternatively, AlphaFold 2's output is noisy, and using that to train AlphaFold 3, which presumably may be used to train what becomes AlphaFold 4, results in a cascade of errors.