Cracked delivers: 6 Small Math Errors That Caused Huge Disasters.
The first paragraph hook is perfect:
If there are any children reading this, there's really only one thing we want to tell you about adulthood: If you make one tiny mistake, people will die.
Good article, but they missed a great opportunity to talk about hindsight bias. Those mistakes are only "laughably simple" after the fact.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
If continuing the discussion becomes impractical, that means you win at open threads; a celebratory top-level post on the topic is traditional.
Poster's Note: omg, it felt so weird typing "2012" up there.