TEDxObserver is our day-long festival of ideas, where some of the world's most interesting and committed people share their vision of a better world. Join in and you too can be 'fascinated, enthused, exhilarated, moved and amused', writes Observer Editor John Mulholland
David Mitchell: We must try to contain our boredom, because the creation of a fully networked health service is an important matter that deserves our full attention
Keith Stuart: This week saw the launch of a new initiative to get computer science into schools, as well as the government's response to Nesta's Next Gen report. Is this a pivotal moment for the UK games industry?