Didn't had one yet. Apparently all I have is "crap, here we go again" whenever Claude is giving me a solution to the problem I am presenting to it. Because I understand where it goes and it's full of errors, but those are errors I can avoid. Together we cobble something in the end, I do learn something new as well, but was never "here is my prompt, then Claude delivered final solution next" - like so many commenters here point out they have.
Frankly, to an outsider whatever it presents looks legit, but as an expert I recognize its failures, which makes me even more entrenched in the idea to never use it outside my area of expertise.
I have a question for all them believers: If on a hypothetical scenario you, having no medical experience, find yourself and your child on a mountain, 12 hours away from nearest road, and your offspring is having appendicitis (let's assume your recognize this 100%), with a sharp knife and Claude at your disposal - would you risk to operate on your child? Or hurry the fuck down to get him to a hospital? I know I would chose to get him to a hospital, because that would be a better chance for my kid to live than me to operate on my kid with Claude's assistance. I am pretty sure I would kill my kid on that mountain. So yeah, outside my area of expertise I don't trust Claude one bit.