@nohat I’m guessing the FATHER–BOTHER merger is talking about the CLOTH vowel being replaced by the FATHER vowel. But in COT–CAUGHT, is COT supposed to be the FATHER vowel or the CLOTH vowel? I have the same vowel in CAUGHT and CLOTH, which I think is actually /ɔ/ not /ɒ/ for me, and the same vowel in FATHER and COT, which I again think is /ɑ/ not /ɒ/. My conjecture is that no American has a three-way distinction between /ɔ, ɒ, ɑ/. I don’t think I have /a/ anywhere, but am unsure.
> Ox is the only word in general Eng. use which retains the orig. plural -en, OE. -an, of the weak declension. An older umlaut pl. œxen, exen occurs in O.Northumb., whence app. exin, exon in 15th c. A new pl. oxes occurs 14-16th c., but has not survived. The genitive sing. oxes for oxan appears in Lindisf. Gosp. With the northern owse, owssen, cf. Dutch and Flem. os, ossen.
The things is, other things take its place. I grew up with a distinct sg/dl/pl distinction for the you pronoun, in that you couldn’t use “you all” or “you guys” when “you two” or “you both” was called for.
Two people cannot be “you all” to me, any more than they can be “all of you”.
@tchrist There's "y'all", and "youse", and "yinz" ... all invented by the Irish, supposedly, because they missed the second person plural from the Old Country.