I remember when these technological advances were made:

I remember when radar came out during Pearl Harbor, when they picked the Jap planes up they thought they were birds because they didn't know yet, the soldiers who they put on it weren't trained enough or something. Then the fishermen started using radar, as it improved. Cars got better, farmers tractors got better. Jets came in, they was testing them. Airplanes changed. Technology got better, television came in, now we are in the computer age.