English 30,000 years ago history of communication for speech to develop Harold Innis argued History of communication 英語版 History of Communications History of Communications History of Communications History of Communications History of Communications for speech to develop methods of communication for speech to develop symbols History of Communications https://en.wikipedia.org/wiki/History_of_communication fires, beacons, smoke signals 英語版 until TECHNOLOGY was introduced and used History of communication communications history History of communication symbols History of communication https://en.wikipedia.org/wiki/History_of_communication fires, beacons, smoke signals 英語版 communications technology symbols methods of communication 英語版 Harold Innis argued Wikipedia History of communication