http://www.pimco.com/LeftNav/Late+Breaking+Commentary/IO/2005/IO_Feb_2005.htm
"... Rob Arnott of Research Affiliates LLC, sub-advisor of PIMCO’s all asset strategy and a co-collaborator with Peter Bernstein on several articles about risk and future asset returns, has advanced what I consider to be the most realistic take on Social Security and Medicare trust funds. Pre-funding these systems, he argues, "is basically irrelevant." And (in my own words) it matters little whether the system is pre-refunded with Treasury bonds or privately held stocks. The fact is that both of these financial assets represent a call on future production. . ."
"... Rob Arnott of Research Affiliates LLC, sub-advisor of PIMCO’s all asset strategy and a co-collaborator with Peter Bernstein on several articles about risk and future asset returns, has advanced what I consider to be the most realistic take on Social Security and Medicare trust funds. Pre-funding these systems, he argues, "is basically irrelevant." And (in my own words) it matters little whether the system is pre-refunded with Treasury bonds or privately held stocks. The fact is that both of these financial assets represent a call on future production. . ."