The problem with the "not recognising" aliens hypothesis isn't that we can't recognise the aliens themselves, its that given the time span to colonise the galaxy, we should be able to see evidence of their work. If you can build two copies of a Von Neumann machine at a target star, why not 2 billion? 2 trillion? Why… » 12/11/14 7:32am 12/11/14 7:32am

Maybe its just me, but there was very little in Rudin's comments that was actually wrong. He seemed more exasperated about pandering to egos than anything else. Would definitely have been better off not doing it by email though. » 12/10/14 4:04am 12/10/14 4:04am