What is the best invention in the world that?

I think and also believe that the best invention so far in the world is the invention of a wheel. No one knows who was its inventor but this invention has changed life completely.

The best invention I could think of is the cellular phone/ mobile phone. For me, communication is really important and even though I maybe far from my loved ones and friends, I can still connect with them, get to know what's happening with their lives and be in touch with the people closest to me. Furthermore, these gadgets are easier to carry and most of them are user-friendly.

i think one of the best invention is the inventor of electric generator which has lead a revolution of inventions using electricity from the generators.if it wasn't invented then we won't be having the simple pleasures of life today.now we have flourescent lamp,electric fan,air conditioner,water heater,computers,tv and a lot more.with electricity all of those things cannot work and life for us will be miserable.advancement in technology won't be there if there is no electricity.so i think electric generators is one of the most important invention ever invented by man.