"Them" has been valid English usage for centuries. It fell out of favor somewhat in the late 19th century (thanks to the same sniffy Victorian prescriptivists w

"Them" has been valid English usage for centuries. It fell out of favor somewhat in the late 19th century (thanks to the same sniffy Victorian prescriptivists who decided that you shouldn't end a sentence on a preposition just because it's not allowed in Latin), but has been on the rise again for several decades. Yes, it's somewhat ambiguous, but it's grammatically correct and it's really the best option we have.