I was just reading over in the thread about well paying jobs in the 40's and certain of our chronologically endowed forum members started sharing some cool stuff, and that got me thinking about how things change. Things really have changed. When my grandpa was a teenager he would drive a team of horses by himself up into the mountains to get a wagonload of coal for the winter. It was a two day round trip, and one of his favorite stories to tell is when the wagon tongue broke and he had to chop down a tree and rough it out with his hatchet in order to get back. A couple decades later, he was inventing call forwarding. Exploring through the house when I was a kid yielded some interesting things. I found a book that had a picture of a little girl at a rock climbing school, and her safety gear consisted of a rope tied around her waist. I also found another book showing how to make your own telescope lenses. I even found my dad's slide rule. I tried to figure out how to use it and failed miserably. The world's fastest airplane was designed using slide rules and hand-drawn blueprints almost twenty years before I was born. I work at an engineering company, and the employee who mentored me started out here using a mixture of hand-drawn and CAD drawing. She even still has the special table. I just think it's strange how some things are much older than we imagine, and others are much younger.