Originally Posted by
David '47 Redux
The investment track has the advantage of years (decades?) where the asset is used productively before it's tapped.
No it doesn't. Social security can be thought of as forced savings. Savings are not in and of themselves assets. They can be used to purchase assets. Saving does not directly produce assets, so the idea that if Social Security funds were put into, for example, the stock market there would then be more "assets" to be used productively is not necessarily true.
Savings can indirectly affect asset formation if savings are in short supply relative to existing assets. In this case asset price would be low and there would be little incentive to create new assets (i.e. wealth formation or what we call economic growth). [Another way to say this is high interest rates are bad for economic growth].
If savings (money for investment) is adequate then asset prices are at normal levels and new assets are produced normally. If excess money is available for investment, asset prices are bid up way beyond their normal levels and asset bubbles result.
Asset price is the reciprocal of the yield. When dividends and interest rates are very high (i.e. asset prices are very low), like in the early 1980's, making more money available for investment (i.e. "supply side" polices) can boost asset prices, encouraging the formation of more assets (i.e. economic growth). When interest rates and dividend yields are very low, like now, asset prices are high. Making more money available for investment (like putting SS funds into private accounts), when asset prices are already in the stratosphere, will have no positive impact on economic growth. Instead it will generate bubbles, which when they burst will harm economic growth. It will also necessarily depress investment returns from what it they would have been in the absence of the additional sources of investable cash.