I think one of the reasons musicians keep doing what they do and writers keep doing what they do, is that we're totally unsuited for anything else. And I for one am much too lazy.
We had an erector set, and I was an avid fan of Popular Mechanics and Popular Science magazines.
Most medical physicists work in the physics of radiation oncology making sure that the desired dose is given to the cancer and the dose to normal tissues are minimized.

