In his 1973 book, Time Enough for Love, Robert A. Heinlein wrote,
A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
I agree with this idea. My mother used to express the concept that someone could be a "jack of all trades, master of none." I've come to disagree. Why not become a master of all things you want to master? I've worked as an