&quot;Advanced civilization go really advanced, to a point their activities would be undetectable to us or would appear to us the nature of reality itself.&quot;<p>This is science fiction, not an argument. We have no <i>rational</i> reason at the moment to believe this is the case, or even possible.<p>What we do in fact have is an increasing trend towards <i>efficiency</i>. Projecting that out along crazy growth curves suggests that advanced aliens are likely to be <i>more</i> horrified by such a waste of negentropy than we are. What can we do with that much negentropy? Nothing, basically. What can they do? Simulate many millions&#x2F;billions&#x2F;whoknows of human-level civilizations?<p>They&#x27;re not more likely to be indifferent about such waste, they&#x27;re more likely to <i>prosecute</i> you, for mass civilizational murder.<p>I&#x27;ve often thought that if civilization could advance to that point in the future, that I&#x27;d have a difficult time explaining to my great-great-great-X grandchildren that when ol&#x27; great-great-great-X-grandpa was young, you know, pouring a tank of gasoline into the car got me from point A to point B and that was it, despite it being enough energy in that one tank of gas to, say, simulate an entire human&#x27;s life time. Well, kids, we didn&#x27;t have that option! The tech didn&#x27;t exist. So stop trying to put ol&#x27; Greats on trial for things he couldn&#x27;t control, OK?