The Big Alien Theory
So they do something like this:
Let&#x27;s choose a human in random - he is more probable to be from Pakistan than from Slovakia. (OK)
Now let&#x27;s choose a country - now an average country like Slovakia is more probable than a country as big as Pakistan. (OK)<p>So if you are a human - then it is most probable that you live in a country that is more populous than the typical country. (OK)<p>Now they say - ok - so now instead of choosing humans let&#x27;s do the same thing with sentient beings. If you are a sentient being it is more probable that you live on a planet where there are many other sentient beings rather than on a planet that there are few of them. But if you go to some random planet with sentient life - then the expected number of sentient beings there would be average.<p>Then it goes on that &quot;Physically larger species will on average have lower population densities.&quot; - so most probably the random alien planet will have fewer and larger sentient beings than us.<p>I don&#x27;t know if I buy that whole argument - but I am too lazy to write the bayesian equations to nail it down.