Mate, word of warning, Harry Dent has been proven wrong before. I would take anything he says with a grain of salt. Here is what some of his readers have said:
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I am really amazed at the shameless spinning by Harry Dent in his latest book about his past predictions. He makes it sound like he foresaw the crash of 2000-2002. But in fact, his previous book, The Roaring 2000s, published in late 1990's, made all sorts of bullish predictions that were totally 100% wrong in retrospect.
In June of 1999, Harry became a mutual fund advisor. It did okay for all of six months, then lost 70% of its value. It regained some ground in the last two years, but is still down substantially from its inception. Just a few weeks ago, the fund was quietly merged into another and the Dent name removed.
So Mr. Dent has another book out, eh? The same guy who put a book out five years ago saying BUY NOW just as the Nasdaq was reaching 5000. Anybody who listened to this guy five years ago surely has a big DENT in his portfolio... or rather, a CRATER. If someone truly knew the secret to attaining market-beating returns, guess what? It would be A SECRET... and he certainly wouldn't be sharing it with you.
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All of this can be verifyed off this freely available website here:
http://www.amazon.com/Next-Great-Bubble-Boom-2006-2010/product-reviews/B000W3U9CY/ref=dp_top_cm_cr_acr_txt?ie=UTF8&showViewpoints=1
Yep and here's some more stuff about this guy (from wikipedia - a referenced criticsim of the guy):
Dent has also been criticized for being downright wrong on several of his predictions by many economists. In fact, www.maxfunds.com, a financial reporting site awarded him the The "Ultimate Charlatan"[3] Award. They write: "The worst investing advice usually arrives near the top and bottom of stock market cycles. Demographic trends guru Harry S. Dent is making the rounds again, and touting his latest book, The Great Depression Ahead: How to Prosper in the Crash Following the Greatest Boom in History ... In his 2006 work, Dent predicted, “The Dow hitting 40,000 by the end of the decade, the NASDAQ advancing at least ten times from its October 2001 lows to around 13,500, and potentially as high as 20,000 by 2009…The Great Boom resurging into its final and strongest stage in 2007, and even more fully in 2008, lasting until late 2009 to early 2010.” ..