Lex, your guest, Demis, said he tends to believe we are alone and unique in the Universe.  That means human’s are utterly precious crucibles and sole progenitors of intelligence and consciousness that need to be protected at all costs. Am I saying it right? Yet ambitious Xi Jinping and Putin for example have us walking on the precipice of unthinkable disaster for our species. In times of reckless crisis, world leaders need emergency reminders about human kind’s tenuous reality. Here’s my question: what are you and your guest doing about it??? The message you and your very smart peer group must impress upon world leaders as national agenda’s seems to be: is  “make science - not war”.  WITH GREAT KNOWLEDGE COMES GREATER RESPONSIBILITY. Right? You smart guys are letting humanity down.