It is not. It’s relative to the subject. In this case, the original author stated that AI only good for rewriting emails. I showed a much harder problem that A

It is not. It’s relative to the subject. In this case, the original author stated that AI only good for rewriting emails. I showed a much harder problem that AI is able to help me with. So clearly, my problem can be reasonably described as “hard” relative to rewriting emails.