. >> host: ash lee vance, i wonder if elon took exception to this paragraph: each facet of musk's life might be an attempt to soothe the kind of existential depression that seems to gnaw at his very fiber. >> guest: i don't think he would necessarily take exception to that. you know, he -- it goes back to the thing we were talking about a little bit earlier on the profoundly gifted thing. he has a, when we would talk about the survival of the human species, and you have to remember that the ultimate goal of spacex is not just to send up satellites, it's to create a colony on mars. this is elon's overarching life goal. i think for some people it probably sounds really weird, but he thinks the human species needs a backup plan, and he feels, you know, his existential dread is that the human species will be wiped out and that a we're not doing anything about this. and, i mean, i don't think he would take exception with that at all. when we would talk, he would break down in tears at the thought of sort of man being wiped out by a virus or something we haven't even foreseen. >> host: mary