First. To become physicist with Ph.D. Do you have to be connected with institutions? Do you have to teach? I will be 50 years in a few years. If I will go back to school. I will become full fledge physicist 60+ years old.. Would I be too old? Haven't you heard of 60+ year old newly graduate physicist? I'd like to be Ph.D. in the Hierarchy Problem as this is what really interests me.