The greatest invention of all times?
146091
Toilet paper, if you don't believe me...try going a day without it.
453017
Science is what allowed you to ask us that question.  Its uses are everywhere.  Without it, we'd all still be cavemen hunting rabbits with clubs.
448414
i would say the AC/DC motor. Invented far ahead of it's time and still being used today.  From air conditioners to alternators, even electricity from Hydroelectric dams. The best invention that's keeps on giving for free.  Generators that if you turn create electricity or if Fed electricity it would turn.  Works one way and same thing the other way around.  Also the wheel it was a beautiful invention and still is in use today.
566436
Necessity is the mother of invention.  I don't remember who said that but it a well known saying. Here is my suggestion.\n\nExamine all your pet peeves.  Surely one of them would lend itself to an invention.
902958
excellent.i have been wondering this for years(serously)If i ever prove this plz dont compete with me for patent.i think we can share the reward.
1152196
I think it could be possible. Even though some people ask why someone doesn't come back and tell us this, if you came back in time and told everyone this, how would you know what effect it would have? What would probably happen it that they when it's invented, nobody will be able to use it, and then it might as well not exsist. There's irony for you.
675236
Indoor plumbing, the transistor (without which there would be no digital electronics), plastics.  I would agree with the "wheel" answer, except that it came around long before the engineering profession and was probably invented by some caveman.  You could also include scientific principles that have been discovered and subsequently led to great engineering feats.  For instance, Maxwell's Laws of Electromagnetism (the principle on which all wireless devices work), Bernoulli's Principle (the basis for airplane wing design) and so on.
67721
huge achievement based on technology in that day
587050
LoVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVving it!!\n\nThanks, inventor!!
170719
http://inventors.about.com/library/weekly/aa020600h.htm
756699
Noone invented it. It is a natural phenomenon which humans have harnessed, channeled and learned to store.
711214
Robert Esnault-Pelterie would be most likely inventor if you wish to agree with the majority of researchers.\nFeel free to visit the source for information over the two mentioned inventors.
429673
I think the most revolutionary invention of the 20th century has (go ahead and laugh) the perfection of the bidding rules for the card game "contract bridge" in the 1930's, because it represents a NEW FORM OF LOGIC which we will see in chaos theory and advancede mathematics over the next 50 years or so.\n\nWhat changed our fculture the most?  Physically, the automobile.  Artistically and intellectually, television.\n\nFor the 21st century, I think a form of artificial intelligence will emerge before the end of the century as the most revolutionary invention.  I think the end of America as the world's superpower will change our culture the most.\n\nIn the 20th century, I think the importation of German philosophy into our arts and culture following 1945 detracted more than any other thing.  But the modern focus-group, polled and surveyed political manipulation in elections and politics is a close second place.\n\nI think the major detraction from our culture in the 21st century hasn't even started yet.  I can't guess what it will be.
103956
God... He invented everything
564109
yes i do think that one of the greatest human inventions is music. i love it, cant get through my day without it to it and it gets me through bad days aswell. Music is the best!
417242
Something he invented.
1034348
I have to say television and radio are the best inventions, because they've entertained us, made us cry, laugh and be happy. They keep us informed. They educate us to many things that go on in the world. "Remarkable."