Both equally. It always starts by looking at the visual world. I'll probably decide once I have a better understanding of both worlds and which I find more alluring. I'll also be looking at other fields outside of that to see which subfield better translates to the most exciting kind of jobs, whether it's in the medical fields or technological fields. The fantastic thing about a physics degree is that it umbrellas over MANY different areas. A masters in physics, you can work as a data scientist or for an engineering company like Pfiser.

Or a defense contractor.

Its pretty exciting.