“I have actually,” Izzy said, thinking.

“Oh,” Emma said. “Really?”

“Of course. Now you say it, I know exactly what you mean.”

“And you’ve had it happen too?”

Izzy nodded. “I think so. Doesn’t everyone do that sometimes?”

“I actually don’t know. I’m not sure.”

“It seems like people do. I’ve done it. You probably have too.”

Emma thought. It had never occurred to her to wonder whether she was as capable as other people of that little slip. “I suppose so,” she said, doubtfully.

“I think you have. I think everyone does, sometimes.”