Excerpt: [T]he rising tide of boomers in the U.S.... needs to meet challenges that previous generations never faced, including changes to key retirement institutions, ... medical-care cost inflation and the 'lump-sum illusion' -- the tendency to view retirement savings as a lump sum, as opposed to a prospective income stream. Knowledge@Wharton spoke with [Olivia] Mitchell and [Christopher] Condron about how the financial services industry is working to meet the needs of [boomers].  MORE >>