Is there anything revelatory in this article? I didn&#x27;t see any links or references to new papers&#x2F;ideas, but some Googling returned this 2016 PDF[1] titled &#x27;The Case for a Gaian Bottleneck&#x27; by Aditya Chopra from ANU.<p>There&#x27;s been discussion in the past[2][3] about these &#x27;Great Filters&#x27; that prevent life from occurring everywhere in the universe.<p>[1]<a href="http:&#x2F;&#x2F;adi.life&#x2F;pubs&#x2F;ChopraLineweaver2016.pdf" rel="nofollow">http:&#x2F;&#x2F;adi.life&#x2F;pubs&#x2F;ChopraLineweaver2016.pdf</a><p>[2]<a href="http:&#x2F;&#x2F;mason.gmu.edu&#x2F;~rhanson&#x2F;greatfilter.html" rel="nofollow">http:&#x2F;&#x2F;mason.gmu.edu&#x2F;~rhanson&#x2F;greatfilter.html</a><p>[3]<a href="http:&#x2F;&#x2F;waitbutwhy.com&#x2F;2014&#x2F;05&#x2F;fermi-paradox.html" rel="nofollow">http:&#x2F;&#x2F;waitbutwhy.com&#x2F;2014&#x2F;05&#x2F;fermi-paradox.html</a>