The first key point about 'let it crash' is that you drive towards zero-defect programming. Every time the system walks away from the happy path you crash write

The first key point about 'let it crash' is that you drive towards zero-defect programming. Every time the system walks away from the happy path you crash write a log. Every day with our production systems we check the live production logs to identify defects that we try and remove. The second key point about 'let it crash' is that with OTP your system is always macro stable. Even if every function is only a stub and every stub contains exit(bleh) and always fails at a micro level, your system is always macro stable - the gift that keeps on giving!