Introduction to Software Testing



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software-safety

Understanding

  • The safety features designed for the boilers did not work as well as predicted because they were not based on scientific understanding of the causes of accidents.
  • Something that sounds good isn’t necessarily a good idea. You need to develop a deep understanding.

A good idea in one field is not necessarily good in another field

  • For example, consider N-modular hardware redundancy:
    • Use N identical hardware components in the same role. If they always agree, fine. If not, take a vote.
    • This is a highly-trusted engineering design principle for safety-critical hardware systems.

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