وما الذي قد يسوء؟

This is what people did to go viral in 1986.
1.5 million balloons, 2500 volunteers, a world record that probably not many people care about breaking, and disaster.

32 years later this random little documentary on the ill-fated Cleveland Balloonfest is a lesson on big ideas and the need to actually as the "what could possibly go wrong" question.