> It does say something about medical breakthroughs -- since they're happening all the time and not shifting this upper bound very much. Given that those who a

> It does say something about medical breakthroughs -- since they're happening all the time and not shifting this upper bound very much. Given that those who are 115 today were 85 when breakthroughs were made three decades ago, I'd say that we simply don't have the data yet to make that assessment.