But the point of Fermi’s Paradox is that we are not seeing evidence of alien intelligence anywhere. We don’t expect it here on earth, but we look out in space and see no light/radio/other waves that look like messages; no energy bursts or other anomalies that don’t have better explainations (though some have no explaination at all). The Great Filter is simply a hypothesis – like the Dark Forest – as to why we don’t see evidence of intelligent life in space.
If we went back to caves, we’d have great-filtered ourselves.
I just encountered this. I looked for images of “White House Rose Garden” and 90% of I got was images of it getting bulldozed for getting paved over per Trump’s recent command.
So I looked for images from 1980-2010 and 90% of I got was historical stuff NOT from that time range – like yellowed photos of how it looked before Jackie O’ made it the Rose Garden, or pictures of MLK or other random gardens.
There HAVE to be images of the Rose Garden from before Melania ripped out the trees in Trump’s previous term. Where did they go?
The best collection I could find was on this unsecured site: http://tysto.com/grounds/rose-garden.htm
After that, it was, sadly, two dog pics on a Daily Mail article. One with a Bush the other with Regan and Thatcher: https://www.dailymail.co.uk/news/article-2440219/George-W-Bush-pays-tribute-dead-dog-13th-birthday.html
Most sites only have stuff like this current/bulldozer stuff: https://www.townandcountrymag.com/society/politics/a65124864/white-house-rose-garden-paved-photos/
Where did all the other photos go???