But that's the thing, nothing in the valley came "crashing down" except maybe the net worth of some investors, who just went from obscenely wealthy to very wealthy. And maybe TechCrunch's standards.
Buildings are all still standing. Almost every company that was in business yesterday is still in business today. There've been a few layoffs, but those were due to issues stemming a while back.
Everything is, for the most part, the way it was two weeks ago. It'd be one thing if there was an 8.2 Earthquake. But the Dow dropping?