[cguess]

As an aside AP Style is not use an Oxford comma, and that's been the rule for 50+ years https://www.prnewsonline.com/explainer-how-to-use-oxford-com...

[3eb7988a1663]

This is upsetting.

[erikerikson]

Yes, finding out how badly wrong you were is never fun. Of course the lack of ubiquitous Oxford comma use is itself and separately displeasing.

[krferriter]

AP Style is simply wrong on this, then.

[kbelder]

Well, omitting the Oxford comma is the traditionally correct thing to do. I use the Oxford comma, it makes sense, but it is new. A hundred years ago it would have been considered an error by nearly every editor.