"Here's the deal," Carolyn says. "It's 10:30 now. We've got time to make four, maybe five visits. But we have at least six people to see."

"So we have to prioritize," you say. "We can't waste time on wrong theories."

Jason hands you the laptop. "Here are the people we want to talk to. Only three of them are available for a visit right now."

Carolyn nods. "We can discuss the choices if you want. Or, just pick one and go."