I'm a undergraduate physics major in my junior year. I want to work in some physics-related job after I graduate, although I haven't decided exactly what yet. My main problem is that there's no one subject (Mechanics, Electrostatics, Quantum etc..) that I'm really interested in and want to do above all else. I like pretty much anything. And in addition to that, I also have a lot of interests outside of Physics, like CS, Philosophy, Neuroscience and History. So I just don't feel comfortable with the idea of spending 10-30 years working on some niche physics experiment, like some people end up doing (especially considering that your life-long efforts may come to no fruition). I need more variety. So I think I want to pick physics fields/jobs where I can work on some problem(s) for 1-3 years, and then move on to something else. Are there fields/jobs/job-types/employers etc... where I could best do that? Or is it the case that in physics you don't have the luxury to choose such things?