There really shouldn't be any "serious and unfixable way" to break things, especially in a modern company that uses technology in any meaningful way. The fact it's even possible to get into an unrecoverable state is the primary issue.
That's literally always possible? The idea is to put up walls and fail-safes to minimize the chance.
That's literally always possible? The idea is to put up walls and fail-safes to minimize the chance.