[LoganDark]

A fun fact I learned just recently is that even Shakespeare used singular "they":

http://itre.cis.upenn.edu/~myl/languagelog/archives/002748.h...

(and even singular "themselves"!)

which puts to rest approximately every argument I've ever seen against it.

[gaganyaan]

Because this often ends up with people talking past each other, never until a few years ago did anyone use singular they for a known, specific person. Shakespeare used it for unknown or nonspecific people.

[commodoreboxer]

It was also used in the King James Bible, published in 1611.

[LoganDark]

Interesting. Shakespeare had first used singular 'they' in 1594, so not even that long before.