I recognize that I may be guilty of beating this issue to a pulp, but given that (1) Wall Street spent most of the first quarter of 2000 figuring out new, creative ways to value companies with no earnings (remember the introduction of the price-to-sales ratio?) (2) few, if any, individual investors gave the mania that was occurring a second thought ("It's a new era"), and (3) ditto on that for the mortgage/credit crisis (which took more than a year to develop, by the way), I'm not terribly convinced that the public is going to see the next big thing coming. Thus, I prefer to let the market "tell me" what's important and what isn't.