I’m really an engineer. Yet I still don’t understand why you NEED a degree and NEED knowledge.
I worked very hard in school, but I did it because I WANTED to become an engineer and that was pretty much the only way to do it, not because I NEEDED the degree or the knowledge. If I didn’t want to be an engineer, I wouldn’t have put myself through all the trouble.
You seem to answer a lot of “why” questions with “you should know why”. If I knew why, why would I ask?