Posted: Feb 29, 2020 2:08 pm
That's a really good question. The answer, on a local scale, is none:
https://www.thegreatcoursesdaily.com/ei ... -elevator/
Lifeboat for the rational mind :D
http://www.rationalskepticism.org/
http://www.rationalskepticism.org/viewtopic.php?p=2734118#p2734118