Many jobs today are unheard of ... unheard of, that is, by me. Meet a young person. Ask what they do. There's a good chance they work with computers, medicine, consulting or project management ... with incomprehensible job titles. Again, incomprehensible to me.
My careers were in smaller organizations with few specialties or high tech jobs. So, my experiences were limited. I try to be open and to learn when I meet these "new careerists." Still, there's the feeling of foreignness about today's jobs.
Here's a photo that illustrates the new world of jobs.