What do you think has been the most influential invent since 1900?

the computer! The influence of the computers today is just amazing! the computers are every where! I think it is the reason for all of the high technolegy and the world developing...

I think that Cell phones have changes our culture enourmously in the past few years. People don't talk to strangers at all now, not even thank you's as people open doors for them. They just chat away on their cell phone ignoring the people who are actually there. We are all becoming members of the borg collective, afraid to be left alone with our own thoughts