It was roughly said, in obvious jealously, "my xxxxxx can't be improved. It can't be as good as yours." I explained that mine used to be worse than theirs, which they know, and I've worked at it for two years now, daily. They acted as if theirs couldn't improve, yet they don't work at it but rarely. Of course it can't get better if they aren't trying often enough.
It's a case of "trying nothing but being all out of ideas"