Viagra, anybody? :dunno:
Can't believe no one said "knife"
Even after thousands of years it's still a versatile tool. Not a day goes by I don't use my pocket knife, and on the rare occasion I forget it, I feel off all day.
Think long and hard about it and choice is very clear.
Alternating current and a method for its distribution.
Without it electricity would be unsafe to run into a home
Take it from there.
Nikola Tesla came up with the brilliant idea
Give him a lil credit for the greatest invention
He also invented and holds pattents for several hundred other things dealing with both electrical and non electrical devices.
compared to him Edison was not really that smart
You use a pocket knife every day? How/where?
I dont really think you can classify any medical thing as a great invention... All they are doing is allowing people to live longer which in turn is causing greater deterioration of the planet.
The bicycle must be up there. Think about how old it is and how little it has changed since its creation.
Optical fibres is also a pretty good invention