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A comment on What If We Haven’t Met Aliens yet Because They’ve Messed Up Their Planets Too?.
1. Civilizations have a short “technological” shelf life eg when they can send and receive signals, say 200y
2. They are spread apart by space and time by natural distribution
3. The chances of two of them overlapping (eg civ a is transmitting during a time civ b will hear it) is very small
So nobody ever hears each other. Maybe If we were around for 5000 years we’d catch one.
But we won’t be.
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1. Civilizations have a short “technological” shelf life eg when they can send and receive signals, say 200y
2. They are spread apart by space and time by natural distribution
3. The chances of two of them overlapping (eg civ a is transmitting during a time civ b will hear it) is very small
So nobody ever hears each other. Maybe If we were around for 5000 years we’d catch one.
But we won’t be.