The universe is incomprehensibly huge, and nature tends to repeat itself. Even if a natural occurence, such as life, is extremely rare and improbable, the universe is so big that it’s bound to happen again.
If you go to a white-sand beach and find a single grain of black sand, which one is more likely?:
* That is the only black grain of sand in this whole beach?
* There’s very likely more black grains of sand, though it won’t be nearly as common as white grains?
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