The Shadow knows ... At least he did when it was all said and done.Growing up I was huge fan of old-time radio serials. One of my favorites was “The Shadow,” which spotlighted an invisible crime fighter who used his many gifts, including his powers of observation, to unlock mysteries.This practice of using reason, and other gifts at his disposal, served the Shadow well in his crime-fighting adventures, and it’s these same skills that serve those who are interested in learning more about careers through a process knowing as job shadowing.In my last column, I shared the value of following …