A misplaced decimal point. An ambiguous phrase. A decision to save money on rivets. Five disasters where a single small mistake cascaded into tragedy—from the Challenger explosion to a Mars mission lost over units. These aren't stories about bad people, but about how fragile complex systems really are when one detail goes wrong.

Content Notice

This episode discusses fatal disasters including the Challenger explosion, aviation accidents, and the Titanic sinking. Contains descriptions of engineering failures that resulted in loss of life. Presented factually without graphic detail, focusing on the cascade of decisions rather than the human toll.

Let's see what the world's been hiding.