Benjamin Franklin initially proposed electricity around 3 hundred years ago with a famous kite experiment showing lightning as a form of electrical discharge. Back then it was just an experiment, who would’ve thought some 300 years later we’d be using it for almost everything lighting which previously would’ve been a candle or a gas lit lamp. Refrigeration where I’m sure good would often go rotten before it was eaten and many other uses. You can’t talk about electricity without mentioning Thomas Edison amongst other things he created the lightbulb hence the term “Edison screw”.