I can't say that to my student. What kind of teacher would I be? He might not have found out who Satoshi Nakamoto is, but he learned how to think, use research

I can't say that to my student. What kind of teacher would I be? He might not have found out who Satoshi Nakamoto is, but he learned how to think, use research tools, ask good questions, and communicate the outcome of his investigation. He got a straight A.