[selfhoster11]

Part of the problem is that the job of an accountant, lawyer, electrician (and presumably a mechanic) has that responsibility and duty of care imposed by law. If a client is pushing you to cut corners that are illegal to cut, you point them at the law book and tell them to piss off with their meddling. And because it's illegal, everyone in your jurisdiction will have to do the same thing, thereby assuring that the outcome of this particular Prisoner's Dilemma is rigged in advance except for the most foolish/risk tolerant who are willing to break the law.

The software profession has no such thing, for the most part. So clients will keep probing and meddling, just like toddlers who want to know how much they can get away with before their parents punish the misbehaviour. And if some people die, or suffer from algorithms gone wrong, or are just generally pissed off left and right because of bad software - who cares. Profits are king, right?

[cweagans]

Without legally imposed duty of care, the only thing that can be done to draw a line in the sand is to commit (collectively) to maintaining a reasonable level of professional practice.

Simply do not entertain probing and meddling. "It's going to take a little longer because the software is complex and it takes some time to untangle it" is all you need to say. Whether you refactor/test/document it in the process of understanding it is irrelevant.

[selfhoster11]

That won't work. As I said, for developers, this is a Prisoner's Dilemma scenario. It simply takes enough defectors to fill jobs at companies that don't care about quality, and you lose any collective power you had as a group.