Set forth below is the text of a comment that I recently posted to another blog entry at this site:
Hi Rob,
I ask these questions because I believe you have derived implications from Shiller’s work that are unfounded. I’ve tried to encourage you to take not just my word for it but to seek out the opinion of others whose opinions you respect. And, importantly, to do so with enough humility and intellectual honesty to accept their reaction at face value rather than constructing an intellectual Rube Goldberg contraption that allows you to dismiss them. Many of my prior comments to you toward this end were deleted.
I’m not familiar with some of the statements you ascribe to Shiller. But I don’t find it shocking in the least that, for instance, he believes stock prices are a bit overvalued yet he still holds a healthy allocation. That’s because he recognizes something important–the future is unknowable. Just because something has happened in the past does not mean it wil happen tomorrow. Shiller invests with a healthy balance of skepticism and prudence.
I’ve tried to encourage you to take not just my word for it but to seek out the opinion of others whose opinions you respect. And, importantly, to do so with enough humility and intellectual honesty to accept their reaction at face value rather than constructing an intellectual Rube Goldberg contraption that allows you to dismiss them.
You are asking me to cancel out what my brain tells me and to betray my country because of intimidation tactics used by Wall Street Con Men to silence those who ask hard questions, Anonymous. This I cannot do.
That’s because he recognizes something important–the future is unknowable.
That’s the fundamental question on the table — Are future stock prices knowable or not? If they are not knowable, I agree with you that Buy-and-Hold is the ideal strategy. On the other hand, if they are knowable, Buy-and-Hold is the most dangerous Get Rich Quick Scheme ever concocted by the human mind. It has caused four economic crises and is in the process of bringing on the Second Great Depression.
The “revolutionary” (Shiller’s word) aspect of Shiller’s research is that he showed that stock prices are knowable in the long term. That was something new. The entire Buy-and-Hold Model was based on an opposite belief.
The most important economic and political issue before our country today is whether the Buy-and-Holders are right or whether the last 33 years of peer-reviewed academic research in this field is right. I will continue to do what I can to get the internet opened up to honest exploration of this question.
Just because something has happened in the past does not mean it wil happen tomorrow.
It does not.
But 140 years of past is a lot of past.
And please remember that the last 33 years of peer-reviewed academic research shows that Buy-and-Hold worked for zero out of those 140 years.
We have to invest in some way. When we have one strategy that has worked for 140 years out of 140 years of stock market history and another that has worked for 0 our of 140 years of stock market history, I feel more comfortable going with and recommending the former over the latter. Call me madcap.
Shiller invests with a healthy balance of skepticism and prudence.
And incoherence. To say that stocks will not be safe to invest in again until the P/E10 value goes below 10 and then to go with a 50 percent stock allocation when that has not yet happened is incoherent.
Shiller is a great man. I rank him even higher than Bogle. But, like Bogle, he is a man. And, like all men, he get things wrong from time to time. His friends are the ones who tell him so and thereby help him on his way to a better understanding and even greater accomplishments.
My sincere take.
Rob


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