alt Hacker NewsI've only changed "redactions" into "updates / retractions" as that was a typo.
Please take a look at https://www.nytimes.com/international/section/corrections for a small selection of what slips through fact checking on a well established and reputable newspaper.
I don't doubt that massive organizations make a lot of errors.
I don't think it makes your point, tho. The question is error per volume.
I seriously doubt Gruber does the same amount of fact checking as a serious publication. And that was my point above.
But I could be wrong - if you actually know I'd love the answer.