Sometimes you can try it (does the code work?) Or do your own searches, which will be easier once you know the relevant keywords and what to look for.
I agree that it’s kinda useless to consult an unreliable hint engine when you don’t have a way of verifying the output.
Don't you need to know if the llm is wrong to rephrase your problem? How are people asking the llm to do something they do not know how to do, then being able to know the answer is incorrect?