A reader makes a good point re that story about us killing the universe:

What I found amusing about this theory is that it assumes we are alone in the universe. What if there are ancient intelligences out there, who have been observing the universe for billions of years? Does that mean its been shortened from a life time of 100 trillion years to 100 billion years? Or is it all just existential mummery? I’m guessing that this physics is equivalent to the argument over how many angels can dance on the head of a pin…