A few years ago, after ChatGPT but before agentic, I was asking AI for help with some projects. It kept recommending really good, well designed APIs, and gave me code snippets for them.

One small issue: they didn't exist! It had just hallucinated them!

Which was a real shame, since they were much nicer than the actual stuff I ended up finding.

I just realized, thinking about this now, that these days (and perhaps even back then), I could just say "ok now take this code and build the missing library so it actually works!"