[nordsieck]

> Why?

> If a bridge is built wrong and kills people when it collapses, someone must be at fault.

1. We mostly know how to build bridges that don't collapse. We do not know how to create software that doesn't contain bugs. Even with the most intense scrutiny.

2. Software exists along a gradient between casual to critical, whereas all structural/civil engineering is of critical importance. It simply makes no sense for society to force you to analyze your Excel formulas as intensely as a civil engineer analyzes a bridge.