> Having the LLM write down a skill representing the lessons from the struggle you just had to get something done is more typical (I hope) and quite different from what they're referring to

Just as of last week I had Claude build me a skill when I ask it to help me troubleshoot issues, and it came out quite good.

It did had some issues (Claude tends to o er specify over anecdotal data) but it's a strong step in the right direction.

Also, "skills" are too broad in my opinion. I have one (that Claude wrote) with my personal data that I have available when I analyze my workouts.

I think there's ample room for self-generated skills when you use a rather long exchange on a domain you plan to revisit, _specially_ when it comes to telling Claude what not to do.