[fintstone]

Never fully understood calc/diff eqs and managed to avoid using them as a scientist/engineer.

I once had one of the greatest physicists of our time (German scientists that came to U.S. after WW2 with Operation Paperclip) explain all of the concepts of physics (that I could not really understand) to me. He talked about it as if it were a religion and only he could see God. He made it as simple as ABCs....and everything made sense. It made me want to sing with the choir.
I wanted to go back to school and study physics and uncover all the nuances. I understood it all. I could hear angels singing in the background and the sun and rainbows were both glowing all around us with unicorns flying by). I wish I made a recording as a few days later, I could understand none of it again.

MBA business stats were much easier.