WASHINGTON -- Is George W. Bush a serious person? It's not a question to ask lightly of a decent man who holds the U.S. presidency, an office worthy of respect. But it must be asked.

No one "anticipated the breach of the levees" due to Hurricane Katrina, he said, after being criticized for his administration's dilatory response to the suffering in the city of New Orleans. A day later he told his director of the Federal Emergency Management Administration, Michael Brown: "Brownie, you're doing a heck of a job."

Is Bush a serious person?