Duolingo got me enough vocabulary in Spanish to put the simplest sentences together, and then follow more robust lessons. I still think it was a good starting point, but I won’t use it anymore on principle.

I had to tell a bunch of librarians that LLMs are literally language models made to mimic language patterns, and are not made to be factually correct. They understood it when I put it that way, but librarians are supposed to be “information professionals”. If they, as a slightly better trained subset of the general public, don’t know that, the general public has no hope of knowing that.