Comment by derefr

The embedded engineering mindset is not a mindset of "writing bug-free code"; it's a mindset of treating the first ~20% of the time budget you're given for the project as time spent designing and writing code (and constraining scope appropriately); and then treating the rest of your time budget as time spent coming up with every possible way to validate/static-analyze/fuzz/etc your code you can, and then debugging all the resulting failures. (Which also implies structuring your code so that it remains at all times extremely testable, whether you are writing tests just then or not.)