TL;DR:
Most software bugs that make it past testing are transient "heisenbugs". That is, they're the kind of bug that goes away when if you restart the program.
Related: This is actually a core tenet of the Erlang ecosystem -- spend any length of time around Erlangers and you're bound to hear the phrase "let it crash". Erlang actually has support for this built into the system: Supervisor processes exist to automatically "power cycle" your code if an unhandled error occurs.
TL;DR: Most software bugs that make it past testing are transient "heisenbugs". That is, they're the kind of bug that goes away when if you restart the program.
Related: This is actually a core tenet of the Erlang ecosystem -- spend any length of time around Erlangers and you're bound to hear the phrase "let it crash". Erlang actually has support for this built into the system: Supervisor processes exist to automatically "power cycle" your code if an unhandled error occurs.