A world of 10 billion people facing the challenges of climate change, ageing and resource shortages would endure levels of joblessness similar to those confronting Greece today – a country where 50 per cent youth unemployment has given rise to the most polarised society in Europe. Not only would such a scenario generate political and social turbulence on a global scale but importantly – and unlike with Greece – there would be no promise of a brighter tomorrow, however far away.