[Blackthorn]

Libraries do not all follow those rules. The existence of my local library, as I discussed, shows that.

[MR4D]

My point is that by and large, the parent poster was correct.

A lack of complete uniformity across the industry does not mean he's wrong.

[JoshCole]

But the person claimed that all libraries would be uniform when he said his expectation was that it would happen to any library. Therefore, he was wrong. The person you were correcting was right and you provided additional useful context.