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The Great Filter

dee-em
Posts: 10,593
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7/22/2017 12:45:05 AM
Posted: 3 years ago
Why have we had no communication with other civilizations? Some scientists think that there is a Great Filter working which prevents such contact:

http://www.abc.net.au...

The Great Filter theory is that something leads to the destruction of civilisations, before they manage to master intergalactic communication and travel.

Professor Ward said climate change and over-population may well be the Great Filter that leads to the end of human civilisation.

"If you look at any biological system, it doesn't care what species it is, when it over-populates it begins to poison its home," he said.

"They say don't shit where you live. Well there gets to be a point where you can't help but do that."


Agree or disagree?
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keithprosser
Posts: 8,122
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7/23/2017 8:42:36 AM
Posted: 3 years ago
At 7/22/2017 12:45:05 AM, dee-em wrote:
Why have we had no communication with other civilizations? Some scientists think that there is a Great Filter working which prevents such contact:

http://www.abc.net.au...

The Great Filter theory is that something leads to the destruction of civilisations, before they manage to master intergalactic communication and travel.

Professor Ward said climate change and over-population may well be the Great Filter that leads to the end of human civilisation.

"If you look at any biological system, it doesn't care what species it is, when it over-populates it begins to poison its home," he said.

"They say don't shit where you live. Well there gets to be a point where you can't help but do that."


Agree or disagree?

If there are hundreds or thousands of advanced civilisations out there then it would be suprising if none had ever self-destructed, and it would be surprising if they had all self-destructed.

What fraction of civilsations manage to get over the sort of 'hump' we are facing (10%, 99%?) may be another factor for the Drake equation has to take into account, but it could be argued it is already implicit in, say, the Fc and L terms.

But there are too many unknowns to get very worked up about it.

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