In what way? In the way that most of physics 'existed' back then, yes. But the vast majority of 'knowledge' (actual explanations on how nature works, mathematic

In what way? In the way that most of physics 'existed' back then, yes. But the vast majority of 'knowledge' (actual explanations on how nature works, mathematics, etc. etc.) was 'discovered' or 'described in detail' over the last couple of decades.