Somewhat fittingly, Bateman and I were recently discussing how the Earth was first populated with water. In a state of inebriation, and probable complete incorrectness, I recalled a theory that the Earth was continuously pelted with comets from the Oort Cloud Kupier Belt. Even if I was recounting the theory correctly (and I’m sure I probably wasn’t), a new challenger to that probably-wrong theory has entered the arena!

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