A software bug caused a series of fatal radiation overdoses

Lots of Therac-25 discussion in the past

5 months ago (106 points, 57 comments) https://news.ycombinator.com/item?id=42797798

4 years ago (235 points, 77 comments) https://news.ycombinator.com/item?id=26142432

7 years ago (301 points, 110 comments) https://news.ycombinator.com/item?id=17740292

9 years ago (89 points, 40 comments) https://news.ycombinator.com/item?id=12201147

11 years ago (84 points, 77 comments) https://news.ycombinator.com/item?id=7257005