Currently, it is the internet. Hardly a person can be seen walking down the high street (anywhere) without staring at a smart phone in their hand. Entering my Son's house, all is quiet. Looking into the living room I find three Grandchildren. Each one are staring at a iphone, or smart phone, and each are using a pair of earphones. I have to stand directly in front of each one and gesticulate violently before I am noticed!