re: #226 lawhawk

Some grammarians say that you don’t need to include the s after the apostrophe, but you have to remain consistent in your usage.

Yes, but the gold standard is still Strunk, and: “William Strunk’s Elements of Style recommends adding the ‘s. (In fact, oddly enough, it’s Rule Number One in Strunk’s ‘Elementary Rules of Usage.’)”

Probably it’s Rule Number One because Strunk was driven crazy by s-droppage.