1. The Chernobyl disaster in 1986, which was caused by a combination of human error and design flaws. The reactor exploded due to a faulty test, leading to the worst nuclear disaster in history.
2. The sinking of the Titanic in 1912, which was caused by a combination of factors, including human error in judgment and design flaws. The ship was deemed “unsinkable,” but it hit an iceberg and sank, resulting in the loss of over 1,500 lives.
3. The Y2K bug, which was a computer programming error that occurred when dates were programmed with only two digits for the year. This led to fears that computer systems would malfunction at the start of the year 2000, but the problem was largely averted through extensive testing and programming fixes.
4. The NASA Mars Climate Orbiter mission in 1999, which was lost due to a mix-up between metric and imperial units. The spacecraft was supposed to orbit Mars, but it entered the planet’s atmosphere and burned up due to miscalculations in navigation caused by the use of different measurement systems.

These are just a few examples of human errors that have had significant consequences.