When Steve Jobs died on Wednesday, the world lost not only one of its greatest inventors, but one of the few people in history to truly revolutionize the way the world communicates.
There are countless scientists and technologists whose work paved the way for communication as we know it: from Alexander Graham Bell, who invented the telephone, to Vladimir Zworykin, who designed a television with cathode-ray tubes, to Thomas Edison, who had the idea to make electricity available to the public.
But true innovation isn't just about creating a new means of communication. Where people like Steve Jobs stand alone is in creating a new conception of communication: in fundamentally changing the way we view our relationship with one another and with the world.
Here are the three people who did the most for communication.