Another reason - a bug (and there's always bugs) would probably invalidate the paper, possibly causing a recall. Recalled papers are not seen in a positive ligh

Another reason - a bug (and there's always bugs) would probably invalidate the paper, possibly causing a recall. Recalled papers are not seen in a positive light by the science establishment. Careers could be destroyed, if people where held to account. People in software see this as ludicrous. Of course there's bugs, just update the conclusions, and move on! But that's not how a lot of scientists think.