Because 1) language requires no translation from experience 2) language is relatively easy to record, communicate and analyze.
Thus it is inevitable that our language will slide from “reflecting reality” to “reflecting itself”.
Consider where that’s going.
Can you gimme the short version?
Sure - Wikipedia says it better than I could hope to:
Yeah, I get the basic idea. I was hoping for a little more on the actual implications tho. Preferably in conversation form rather than copypasted.