In designing a diesel engine, a technologist might impress individual ways of nonverbal thinking on the machine by continually using an intuitive sense of rightness and fitness.

It doesn't impress like George Washington's plantation on the Potomac, but Lincoln's home in downtown Springfield, Illinois, has proved irresistible to visitors since it opened to the public.

Not only did the two small speakers that sit above and below the screen become an instant dust-trap, they were fairly quiet and didn't exactly impress on the audio quality front.