I started auditioning when I was about 10 and I didn't get my first job until I was 12, and two years at that age is really hard.
In episodic TV you have to keep things secret to keep the viewer in suspense.
Basically, radio hasn't changed over the years. Despite all the technical improvements, it still boils down to a man or a woman and a microphone, playing music, sharing stories, talking about issues - communicating with an audience.

