Quote Originally Posted by dannyboy420
That's easy: the printing press.

Without it, we wouldn't have had all the computers, telephones, and lightbulbs other people are mentioning.

Also, fire and languange don't count because they weren't invented -- they were discovered.
language wasnt discovered, it wasn't like all of the sudden after banging two rocks together out popped the english language. for language to have been discovered that would mean it was already in existance. which it was not. to communicate is an instinct, but to communicate thoughts and ideas requires a language which humans over time, invented. the definition of invent is 'to create by thought, to make or design (something that did not exist before)' language was created by thought. and as far as humans go , it did not exist before, therefore language was invented.