We were required (by the state I believe) to take a comprehensive test assessing our competency at physics. I struggled with test and was disheartened that four

We were required (by the state I believe) to take a comprehensive test assessing our competency at physics. I struggled with test and was disheartened that four years of strenuous effort would be all for naught. I knew I needed to do something to shore up my understanding of physics if I was going to retain the knowledge decades onwards. The other reason was a simple love for the beauty and underlying simplicity of the subject.