What were those things, Irv?
Ah, you mean you want commercially sensitive information?
I think it's safer for me to just say that when I got my licence I couldn't believe it - I thought I'd somehow slipped through the system - I knew there was so much I didn't know that I needed to know, but didn't actually know exactly what it was or I might have been able to read up about it or 'something'. I remember thinking: "hey, they've actually given me a pilot's licence - I wonder what will happen if they ever discover how much I don't know or understand about this". The learning experience after the PPL for fun flyers seemed to be years of 'learning by mistakes' or deliberately staying in limited known territory and getting bored
Today I still meet some new ppls like I was and they think (like I did) that they are the only ones.