Though the internet has enabled an "amazing advance" for humanity, social networks, the addictive nature of smart devices and the loss of personal privacy are real problems, say Bill and Hillary Clinton. It was an unusual scene: a former US president and former first lady and secretary of state on a stage in Joburg discussing the state of the world and the effects of technology on democracy and our mental health. Their interviewer was Adrian Gore, CEO of Discovery Health, whose leadership summit this year included President Cyril Ramaphosa, innovation author Clayton Christensen and SA’s most prolific medal-winning athlete, Caster Semenya. Hillary Clinton was narrowly defeated by Donald Trump two years ago in a bitterly contested election that spawned a new phrase — "fake news" — and a new understanding of a "post-truth" world. Praising the way just about any information can be accessed, she said the internet had enabled all kinds of businesses and communication across the globe, "bu...

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