Will older adults cause a disruption in the economy as they continue to age? Willy Walker interviews Dr. Joseph F. Coughlin, Director of the MIT AgeLab, and author of "The Longevity Economy: Unlocking the World's Fastest-Growing Most Misunderstood Market" on this week's #WalkerWebcast, where they discuss how 'oldness' is being redefined in terms of this demographic's impact on business and economic power.