Thanks for this interview, I really enjoyed it! The timing is right as I just started learning more about General Relativity in the last few weeks as a hobby, mostly because I managed to find a PhD thesis from my undergrad calculus professor on the topic and I wanted to learn more. I am just starting to make sense of tensors and metrics... really amazing to think how these describe curvature of the space we live in, how they have practical implications in the timing of GPS signals, etc. Love it, thanks.