What I love about the creative process, and this may sound naive, but it is this idea that one day there is no idea, and no solution, but the next day there is an idea. I find that incredibly exciting and conceptually actually remarkable.
We are continually faced by great opportunities brilliantly disguised as insoluble problems.
If someone is interested in medicine and also in physics and they like working with people and communicate well with others, I would strongly encourage them.