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And some things on Earth partially fall into that. Fire, you know, look at fire. Fire can replicate, but it doesn't have boundaries and it's basically just unregulated chemical reactions. The viruses too, viruses, they have some of the qualities that they'll be considered partially alive, but they don't fall into all the rest of the other categories. So they're still defining life. Life, the way we defined here on Earth, might have a different, maybe different meaning for life somewhere else on some other planet and some other solar system. So they're still haggling over that. They're still haggling over some of the nuances of what actually defines life.