[jolynch]

> in any serious enterprise that would not be tolerated

I think that's a bit of a true scotsman fallacy. We use a lot of software we didn't write, and a lot of it has bugs. The languages that we write code in have bugs (e.g. Python has a fun bug where the interpreter hangs forever on import [1]; we've hit this in production many times). Software we write has bugs and scalability issues as well. We try really hard to squash them. We have design reviews, code reviews, and strive to have good unit, integration, and acceptance tests. There are still bugs.

I'm glad that there are some pieces of software that are written to such high standard that bugs are extremely rare (I think that HAProxy is a great example of such a project), but I know of very few in the real world.

[1] https://bugs.python.org/issue14903