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Re:There are only four billion floats, so test them all (2014) by TickleSteve on Sunday October 11, 2020 @01:09PM (#24747300)
Thats not really a "defense in depth" situation.

Defense in depth is regarding layering different types of security, not targeted testing.

https://en.wikipedia.org/wiki/Defense_in_depth_(computing)

Re:There are only four billion floats, so test them all (2014) by nitrogen on Sunday October 11, 2020 @01:15PM (#24747341)
It's an analogy. Multiple layers of defense against bugs.