Narrator: I guess you can say that the laws of nature aren't always predictable. Still, when it came to matters of cause and effect... I think we managed to learn a thing or two. Perhaps that day, despite all the chaos, there really were cosmic forces at work. Forces so powerful, so profound, they defied all our attempts of rational explanation. I mean, hey, it had taken only five-thousand years to understand the moon... So, maybe, we were making progress. Then again, when it came down to it, may be, we learned enough for one day.