come up with these numbers that are arbitrary to us because they're not rooted in any particular science. and sort of this idea, that you know, they're walking around with these geiger counters, we've seen these images, they're test the air obviously but you've seen these images where they're waving them over people, that's really meaningless. i mean, that doesn't tell you anything about an individual's potential exposure. so a lot of it just doesn't seem to make sense, and i don't know if that's by design or just they're not sure what they're doing right now. >> tom foreman, you've been kind of doing explainers on what the situation is in terms of -- you know, there's a lot of terms, frankly, that people don't know much about. what have you been looking into? >> anderson, you mentioned the three places. these are the three reactors. they're all very close to each other in this area when we talk about where the concern is. and i'll give you a sense of the size of this because this also helps. these workers, this is some video that was shot at these reactors sometime in the past. when if he go inside here, you can get a sense of how big the actual reactor is. here it is coming up. that's the reactor part. and you see the workers down here next to it.