I approached this book with an inclination to like it. I'm a firm believer in market timing, and I jumped at the chance to learn some new ideas about using the fixed-income markets to time the stock market. I have to say, though, that I came away from Timing the Market frustrated and disappointed. Here's why.
Throughout the book, there is a chart detailing various buys and sells that one supposedly could have made using the author's timing system. However, rather than deriving these buy and sell points systematically, the author seems to choose buy and sell points that would have worked best in retrospect without regard for whether or not they fit into a coherent, replicable system.
For example, in chapter 7 the author adds buy points to her chart right after the waterfall declines in October 1987, September 1998 and September 2001. What is the rule that guides these choices? Apparently, it is that the Fed lowered the fed funds rate at least one-half of one percent after a crash of some kind. This rule is apparently a sufficient but not a necessary condition of buying because numerous other buy points on her chart don't involve this rule at all. So IF you hadn't already committed funds because of other rules, you MIGHT have been able to buy then.
Later in the book, on the basis of a breadth-based rule about the Dow 30, the author erases the September 2001 buy signal and records a buy signal for her system on July 19, 2002, near the ultimate bottom of the bear market. This is based on the fact that all 30 Dow Jones Industrial Average stocks declined on the same day. I see IN RETROSPECT why she did this, but how would you have known in September 2001 to wait for the later buy signal? The author does not address these kinds of questions at all, as far as I can tell. As I said, frustrating and disappointing.
There may be value in Ms. Weir's concepts, but she has far to go if her aim is to develop a rigorous market timing system, in my opinion.