Set forth below is the text of a comment that I recently posted to the discussion thread for another blog entry at this site:
Buy and hold is a strategy. Market timing is a strategy. Neither are human. We are comparing strategies. Look at what you are describing. You are actually making the case for buy and hold.
One of the two strategies is suited for use by humans. The other is not. That’s the difference.
There was a widespread academic belief at the time that the Buy-and-Hold strategy developed that the market is efficient. For the market to be efficient, investors would need to be engaged in a rational pursuit of their self-interest. If the market were efficient, Buy-and-Hold would be the ideal strategy.
Shiller discredited the Efficient Market Theory with his Nobel-prize-winning research. He showed that investors are NOT rational. They are self-destructive. They bid prices up to insane, unsustainable levels. They fool themselves into believing that the crazy nominal prices that apply during bull markets are real, that they can use that money to finance their retirements. Then they suffer the horrible consequences that follow from the inevitable price crash and economic crisis.
If irrational exuberance is a real thing, it is the #1 enemy of stock investors. We all should be doing everything in our power to rein it in. That means telling investors about the amazing wealth-protecting and wealth-enhancing power of market timing at every site on the internet. Once every site on the internet is opened to honest posting re the last 40 years of peer-reviewed research, there can never be another out-of-control bull market. Stock prices are self-regulating in a world in which Shiller’s research is available to investors and in which honest posting re the far-reaching implications of that research is permitted.
Humans are flawed creatures, not perfectly rational creature. We all have a Get Rich Quick impulse residing within us. The “idea” that market timing might not be 100 percent required at all times pushes that Get Rich Quick impulse to places it has never been pushed before. We should all back off the dangerous Buy-and-Hold stuff and get about the business of making the case for market timing/Valuation-Informed Indexing.
That’s where I am coming from, Anonymous.
Rob


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