I'm too young to die!
In 2010, President Nazarbayev of Kazakhstan set researchers the task of discovering an elixir that could prolong his life. Two years later, they came up with a bio-yoghurt that they claim will do just that.
But how will they, and he, know if it's successful? Not knowing when he would die without it, it's impossible to say whether or not it's been effective when he does eventually shuffle off this mortal coil. Innit?