alt Hacker NewsThe fact that they had to guess what the original author did is already an issue in itself. What we see here is that: 1. the original author did not sufficiently document their methodology and 2. when a best effort at reproducing the results is applied and we look deeper, we then discover that the results are wacky.
When someone comes along and proclaims 2+2=5, just because someone is right that they're incorrect doesn't mean their own assertion that 2+2=3 is any more correct, or that their reasoning for believing the original person was wrong has any validity.
Being accidentally correct is only barely better than being wrong, and for many uses (such as when the reasoning is extrapolated and used elsewhere) is no better at all.