"To Engineer Is Human: The Role of Failure in Successful Design by Henry Petroski argues that engineering failures are crucial for progress, as they reveal flaws and lead to innovation, contrasting with the common perception that success is the only measure.

A key concept is that the "exact lifetime of a part, a machine, or a structure is known only after it has broken," and predicting this lifetime is a critical part of design"

And also failure is key part of reverse engineering too

Because failure reduces the complexity space

Exactly the thing our exams btw discourage and penalize