On: The most expensive number in engineering

[CharlesW]

Is there a software equivalent of safety factor? How do you/would you calculate it?

[bigger_cheese → CharlesW]

My work uses SiL https://en.wikipedia.org/wiki/Safety_integrity_level

But I think this is more an electrical engineering thing (for control systems and interlocks and such) not sure how applicable it is to general software.

[benhurmarcel → CharlesW]

In aeronautics there's the concept of DAL for software: https://en.wikipedia.org/wiki/DO-178C#Software_level