Correction appended.

When Hillary Clinton is good on the Sunday talk shows, she is really, really good. But when she is bad, she’s atrocious. When she talks about policy, she will dazzle you. When her own ambitions are on the line, it’s time to reach for the sick bag.

On “Meet the Press” Sunday, it was the latter. Clinton refused to admit any real errors. She implied that Barack Obama is unfit to be president, without ever honestly taking responsibility for what she actually believes.

She broadcast her own humility: “You know, I’m very other-directed. I don’t like talking about myself.” She also described the central role she plays in the lives of all living creatures in the universe: “The Iraqi government, they watch us, they listen to us. I know very well that they follow everything that I say.”

But Clinton’s real problem is that she is caught in a trap, which you might call The Identity Trap.

Both Clinton and Obama have eagerly donned the mantle of identity politics. A Clinton victory wouldn’t just be a victory for one woman, it would be a victory for little girls everywhere. An Obama victory would be about completing the dream, keeping the dream alive, and so on.