Jujitsu Principles vs Technique

I’ve recently been taking private lessons from Gracie Barra Black Belt, Mark Mullen, when he briefly mentioned to me the difference between the principles and the techniques of jujitsu. We didn’t have time to discuss it in depth that day but for some reason, it has stuck in my head and now I’ve had a lot of time to think about it so I decided to write this post to elaborate.