You want to live to 1,000? Start making friends Whatever, there are going to be a lot more old people around soon, and many things urgently need looking at again. If we were to design a pension system today to match Bismarck's – in terms of the age that it starts set against median life expectancy – it would kick in at 103... ...According to the analysis, if you want to scotch the idea of old age as a state of dependency, you have to start thinking not in terms of how long you can keep yourself alive but of how long you can keep yourself healthy. And if you want to keep yourself healthy, the answer, for a change, is not about willpower, exercise, keeping active and looking after yourself. The answer is other people. So you'd better start making some friends.