From Twitter: Yasha Levine, whose a putz, but has a certain cynical
   sense of humor I admire.

     Silicon Valley cyber-alphas dream of leading their own local militia
     when apocalypse comes—in reality, they'll be enslaved by their
     gardener
     (“I will probably be in charge, or at least not a slave, when push
     comes to shove.” Nope, you’ll be a slave.)

   [1]https://twitter.com/yashalevine/status/823542370226597889
   Doomsday Prep for the Super-Rich

   Some of the wealthiest people in America—in Silicon Valley, New York,
   and beyond—are getting ready for the crackup of civilization
   New Yorker:
   [2]http://www.newyorker.com/magazine/2017/01/30/doomsday-prep-for-the-s
   uper-rich

References

   1. https://twitter.com/yashalevine/status/823542370226597889
   2. http://www.newyorker.com/magazine/2017/01/30/doomsday-prep-for-the-super-rich