Comments by "Mat Broomfield" (@matbroomfield) on "Why Alien Life Would be our Doom - The Great Filter" video.

@sungerbok But it's extrmely unlikely. Given that it only took about 1 billion years for life to arise on Earth, there's been a VERY long time for it to arise elsewhere.
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The whole suggestion is ridiculous, and falls at the first premise: that we can detect life beyond our own solar system. The idea that we can say with certainty what the composition of a planet too distant to see, much less the compition of its atmosphere and whether it carries life is scientific arrogance in the extreme.
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Option 4 - other planets in the galaxy reach a point of harmony with their palnet that do not leave detectable signs of their existence from afar.
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Existence doesn't order itself to conform to your notions of how things should be distributed, nor does it conform to a purpose at all. Your body is mostly space, but you don't say "What a waste of space" about that.
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@sungerbok Yes, that's fair enough.
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Complete nonsense. The arrogance of thinking that because we can't find it, it isn't there, added to the arrogance of thinking that life must fall within the narrow parameters we expect and thus must fall within a goldilocks zone and reveal signs that we can detect. Also if we DO discover lots of alien life, that would eliminate the great filter in the first place, so it wouldn't mean one lay ahead of us at all.
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Nonsense. This assumes that every civilisation evolves in the same way; goes down the same steps, has the same motivations and needs and ends up with a broadly similar destiny. Also, why would lesser life on other planets be bad? In any race, there are always those who are ahead, and those behind. All it would mean was that in our own miniscule back yard, we were ahead. Even ruins on Mars would mean only that advanced life had once existed. It wouldn't tell us what had happened to it, nor that we were destined to follow the same steps.
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