人災

1. Origins, structure, and basic meaning

• Structure: 人災(じんさい) means a disaster caused by human actions or failings.
• Basic usage: It is used when examining causes such as inadequate inspections or discussing systems to prevent human-caused harm.

2. Common pitfalls and similar expressions

• Compared with 天災
  • 天災(てんさい) means a disaster caused by natural phenomena; 人災 attributes the cause to people.
• なら makes the cause a condition
  • 点検不足が原因なら sets the condition that inadequate inspection was the cause. The following judgment rests on that condition.