<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><a href="http://phys.org/news/2016-01-aliens-silent-theyre-dead.html">http://phys.org/news/2016-01-aliens-silent-theyre-dead.html</a></div><div><br></div><div>The problem is to accurately judge whether this is enough and not too much.</div><div><br></div><div>I was also thinking about Medea Hypothesis in relation to this. That wouldn't be a bottleneck, but a deadly positive feedback loop. Then again, I guess you could say each Medean event was a bottleneck. See:</div><div><br></div><div><a href="https://en.m.wikipedia.org/wiki/Medea_hypothesis">https://en.m.wikipedia.org/wiki/Medea_hypothesis</a><br><br><div><div style="line-height: normal;"><font><span style="line-height: 20px; background-color: rgba(255, 255, 255, 0);">Regards,</span></font></div><div style="line-height: normal;"><span style="line-height: 20px; background-color: rgba(255, 255, 255, 0);"><br></span></div><div><div style="line-height: normal;"><span style="line-height: 20px; background-color: rgba(255, 255, 255, 0);">Dan</span></div><div style="line-height: normal;"><span style="background-color: rgba(255, 255, 255, 0);"> Sample my Kindle books via:</span></div><div style="line-height: normal;"><a href="http://author.to/DanUst">http://author.to/DanUst</a></div></div></div></div></body></html>