Thinking about the eyes . . . it's also interesting that despite the eyes already turning, Randy was still able to talk and think and be in control of himself. It makes me wonder: What is the point of "Zombieness"? What are those symptoms of the moment when the person ends and the zombie begins - the transition that Datu is fearing? Tanya may have found that moment in the blood with the K18 levels, are there other physical absolute indicators . . . And will Michael be able to interpret those signs correctly in order to do right by Datu (if) when the time comes? (Oh, I hope he doesn't get trigger-happy to make up for his past mistake)