Anybody read Parker's book...
I read Thornton's book in late 2002. He is an engineer who applies structural engineering principles to boomer retirement. System failure analysis states that if a crucial component of a system fails, the whole system will fail. The disperity in the size of baby boom and bust generations is the critical system that will bring down many boomer retirements. They may have to lower their prices to entice the scarce busters to buy their stocks.
The scale effect principle states that what works on a small scale will not necessarily work on a larger one. A design that works well for a small bridge will collapse if used for a large one. Similarly, equities can provide a comfortable retirement for a small percentage of the population, but will fail if too many people attempt to live off of their dividends. The dividend yield will fall too low to support people.
This is the general type of logic you will find in his book.