Testifying before Congress, Federal Reserve chairman Ben Bernanke conducted a master class in the art of understatement last week. "The economic situation has become distinctly less favorable since the time of our July report," he said. Consumers, who account for 70 percent of U.S. economic activity, have been hamstrung by the "continuing contraction of the U.S. housing market," rising energy costs and slowing job creation. And thanks to "tighter credit conditions for some firms," business spending should be "subdued" for the next several months.

Distinctly less favorable? Subdued? It calls to mind Japanese Emperor Hirohito's comment on Aug. 14, 1945, that "the war situation has developed not necessarily to Japan's advantage."

In recent weeks, abundant evidence has pointed to a recession—a broadbased contraction of economic activity—from rising unemployment claims to the continued pain in housing. Wall Street economists, whose employers have been experiencing their own private recession since last summer, haven't shrunk from using the R word. But in certain quarters of Washington, euphemism and understatement, verging on outright denial, are par for the course. In an episode of the hit 1970s show "Happy Days," Fonzie, laboring to concede error, repeatedly choked on the word "wrong," unable to get past the "rrr" sound. (Trust me, it was funny.) In last year's hit comedy "Knocked Up," a character, queasy about using the technical term for terminating a pregnancy, refers to a procedure that "rhymes with shmashmortion." Bernanke and the man who appointed him, President Bush, are clearly coping with similar verbal tics. Call it a slowdown, cite challenges or insist the fundamentals are sound. But please don't call it a recession. Speaking at a press conference on Thursday, Bush said: "I don't think we're headed to recession, but no question we're in a slowdown."

Recessions are unspeakable for several reasons. Many have come to believe (erroneously) that central bankers and executives, by deploying information technology and superior management, have engineered the business cycle out of existence. In addition, the impact of a contraction is so ghastly as to spur denial. For any debt-laden entity—a consumer, a company, a government—a decline in revenues coming in can have a very swift and painful impact. (Think about how soon you'd be begging for debt forbearance if your salary fell 10 percent tomorrow.) For a president, it is political poison to admit that an economic event that rhymes with shmashmession could be within the realm of possibility. Since recessions sap tax revenues, they tend to make huge deficits—like the $410 billion whopper projected for this fiscal year—even larger. And so while the Blue Chip Economic Forecast in February cut its estimate for 2008 growth to 1.7 percent, the Office of Management and Budget is sticking to its optimistic forecast of 2.7 percent—nearly 50 percent higher.

But much as central bankers, investors and politicians would like to wish it away, the business cycle is like Madonna—one of those phenomena that just won't leave the stage. The laws of physics still apply to the U.S. economy. And as a troubling bit of data from one of the last remaining hot sectors released last week shows, the gravitational pull of a falling economy can bring even the most powerful commercial force known to man crashing to earth.

Since its birth, Google has been in a perpetual growth spurt, posting insanely impressive metrics of all sorts—from its share of Internet searches to profits. But last week, the Internet ratings firm Comscore reported that Google's paid clicks—the number of times Web surfers clicked on ads served up with a search—fell 0.3 percent between January 2007 and January 2008, even as the number of searches rose 40 percent in the same period. As recently as August, Google's ad clicks were rising at a 60 percent clip. Google's click-through rate—the percentage of ads that get clicked on, and hence a measure of consumer follow-through on searches—was also down sharply in January.