"David," Ishiah says, tone hard without being sharp, insistent without trying to shake the other man in the process. "Again, don't close your mind off to possibilities, nor try too hard to rationalize everything that you see, remember, or feel. There are plenty of potential explanations that might be capable of explaining what it is that you're going through, but I'm pretty sure all of them require that you don't assume truths or falsehoods with too much certainty yet, certainly when you have no one to verify one way or the other."