What is the greatest invention the world has ever seen?

Quezon City, Philippines
September 24, 2015 6:02pm CST
I think electricity is the best invention because without it. Life is hard. We can't use internet, computer, tv, etc. that's why I am grateful it was invented. How about you?
1 person likes this
2 responses
cmoneyspinner
@cmoneyspinner (9219)
• Austin, Texas
30 Sep 15
The Internet and wireless communication.
1 person likes this
Flippish
@flippish2014 (870)
• Quezon City, Philippines
30 Sep 15
I agree, those are really a great invention.
Venkataraman
@venkataraman_vc (5293)
• Chennai, India
12 Nov 15
Hmmm... Foods? Though I have been wondering the Gadgets, I am little amused when I think of the various recipes of various people. "How the same ingredient can be different for different countries?", an amusing question I always ask myself.