Zoe thought about it. "We need some kind of test. But on who?" Suddenly, the universe presented a candidate for her. Sarah McMillan...the worst bitch in the school. And Zoe could be pretty bitchy herself sometimes, but...
She scanned Sarah from a distance. The device presented a list of decision points. "What are you going to do?" Zelda asked.
Zoe found a decision point on Sarah's date of birth. Apparently there was an outrageous possibility that a nurse might have accidentally mixed up the two babies. The possibility was so unlikely that it had less than a 3% probability. Apparently, the nurse had just broken up with her boyfriend, and was distracted...but had still focused on her work. "Hmm...." Zoe adjusted the decision point so the nurse was more focused on her breakup, and wasn't paying as close attention to what she was doing. "You ready for this?" Zoe asked. "If I hit this...Sarah will have been switched at birth with..."
