my response to that is that 300 times is super tiny and unless alien life decided to travel 300 times (or even 600 times) in a mathematically efficient pattern to the edge of the galaxy (which they have no reason to because there's no reason to assume alien life would want to travel anyways, and it would be a massive waste of energy, resources, and people) we would never have even a hundredth of a percent of a chance of seeing them, even if they travelled 600 times in random directions.
Well, I just used 65 million as an example and Earth is 4.5 billion years old and there are much older planets. My point is that galaxy's size and age make factors other that possibility of FTL travel more important to the whole question. Factors like probability of multicellular, sapient life developing and sustaining itself long enough to colonize space.
my response to that is that 300 times is super tiny and unless alien life decided to travel 300 times (or even 600 times) in a mathematically efficient pattern to the edge of the galaxy (which they have no reason to because there's no reason to assume alien life would want to travel anyways, and it would be a massive waste of energy, resources, and people) we would never have even a hundredth of a percent of a chance of seeing them, even if they travelled 600 times in random directions.
Well, I just used 65 million as an example and Earth is 4.5 billion years old and there are much older planets. My point is that galaxy's size and age make factors other that possibility of FTL travel more important to the whole question. Factors like probability of multicellular, sapient life developing and sustaining itself long enough to colonize space.
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