Astonishingly, she sounded perfectly rational and in control of herself.

"They've seen what's gone on with their parents' generation, and a lack of trust in the corporation is a perfectly rational response to that."

"The oil companies are making a perfectly rational decision."

To them, protected from the action as they were, Voskresenye's behavior might have seemed perfectly rational.

I was acting in a perfectly rational manner at the party.

For psychological reasons, they've got to feel that they're in perfectly rational surroundings.

To my mother's way of thinking, it was a perfectly rational refuge.

By induction, the bottle cannot be sold for any price in a perfectly rational world.

All of which was perfectly rational, but there was another possibility.

The suggestion seemed perfectly rational to a 50-something adult, but the 18-year-old inside me only asked, "Why?"