Mercury: Mercury is the closest planet to our sun. It circles the sun every 88 days, rather than Earth's orbit of 365 days. The surface of Mercury is rocky and resembles that of Earth's moon. It is a dense planet, but not the hottest. ...
Nearly every "labor saving device" is a way to use electricity to do a task which more than likely was not that hard to begin with. Power locks, windows, and steering on a car comes to mind. Nobody minded doing these things by hand before the automatic version was invented, yet now ...